| Abbati degli Olivieri 1742 | Literature | Annibale degli Abbati Olivieri | | | | Rome | | Italian |
| Abbati degli Olivieri 1757 | Literature | Annibale degli Abbati Olivieri | | Jean-Jacques Barthélemy | | Pesaro | | Italian |
| Abbati Olivieri, Annibale - Pesaro, Biblioteca Oliveriana, Ms. 344 | Correspondence Collections | Apostolo Zeno | Annibale degli Abbati Olivieri | | | Pesaro | Pesaro, Biblioteca Oliveriana | Italian |
| Abbé Boule - Claude Picard Duvau - 1732-3-7 | Correspondence | Abbé Boule | Claude Picard Duvau | Laurent Gravier | 07-03-1732 | Marseille | Paris, Bibliothèque nationale de France | French |
| Abbé Boule - Claude Picard Duvau - 1732-8-3 | Correspondence | Abbé Boule | Claude Picard Duvau | | 03-08-1732 | Marseille | Paris, Bibliothèque nationale de France | French |
| Abbé Brulon - Bernard de Montfaucon - 1732-1-29 | Correspondence | Abbé Brulon | Bernard de Montfaucon | | 29-01-1732 | Reims | Paris, Bibliothèque nationale de France | French |
| Abdel-Halim 1964 | Literature | Mohamed Abdel-Halim | | Gisbert Cuper, Antoine Galland, Nicolas-Joseph Foucault, Jacques Bary, Pierre-Daniel Huet, Claude Nicaise, Jacob Spon, Ezechiel Spanheim, Pierre-Joseph de Grainville, Marc-Antoine Oudinet | | Paris | | French |
| Abel-François Poisson de Vandières - Sieur de La Falloize - 1764-7-6 | Correspondence | Abel-François Poisson de Vandières | Sieur de La Falloize | Jean-Jacques Barthélemy, Louis XV of France | 06-07-1764 | | Paris, Archives nationales | French |
| Abert - Cunz 1995 | Literature | Rainer Albert, Reiner Cunz | | | | Speyer | | German |
| Abot de Bazinghen 1764 | Literature | François-André Abot de Bazinghen | | | | Paris | | French |
| Abraham de la Pryme - 1696-04-01 | Diaries | Abraham de la Pryme | | | | | | English |
| Abraham de la Pryme - 1696-07-11 | Diaries | Abraham de la Pryme | | William Camden | | | | English |
| Abraham de la Pryme - 1697-09-23 | Diaries | Abraham de la Pryme | | | | | | English |
| Abraham de la Pryme - Thomas Gale - 1698/9-03-16 | Correspondence | Abraham de la Pryme | Thomas Gale | | 16-03-1699 | | | English |
| Abraham de la Pryme - Thomas Gale - 1700-08-03 | Correspondence | Abraham de la Pryme | Thomas Gale | | 03-08-1700 | Hull | | English |
| Abraham Hill - Hans Sloane - 1706-02-06 | Correspondence | Abraham Hill | Hans Sloane | | 06-02-1706 | | London, British Library | English |
| Abraham Michelet d'Ennery - 1770-6 | Diaries | Abraham Michelet d'Ennery | | Carlo Trivulzio | | | | French |
| Abraham Michelet d'Ennery - Giacomo Biancani Tazzi - 1772-1-9 | Correspondence | Abraham Michelet d'Ennery | Giacomo Biancani Tazzi | Joseph Pellerin, Jean-Jacques Barthélemy, Enrico Noris, Louis XV of France, Augustin Belley, Abbé Leblond, Giovanni Bianchi, Louis-Philippe d'Orléans | 09-01-1772 | Paris | Paris, Bibliothèque nationale de France | French |
| Abraham Michelet d'Ennery - Joseph Khell von Khellburg - 1771-12-2 | Correspondence | Abraham Michelet d'Ennery | Joseph Khell von Khellburg | Joseph Pellerin, Abbé Leblond | 02-12-1771 | Paris | Vienna, Kunsthistorisches Museum | French |
| Abraham Michelet d'Ennery - Joseph Khell von Khellburg - 1772-2-10 | Correspondence | Abraham Michelet d'Ennery | Joseph Khell von Khellburg | Jean Foy-Vaillant, Joseph Pellerin, Augustin Belley, Antonio Savorgnan, Abbé Leblond | 10-02-1772 | Paris | Vienna, Kunsthistorisches Museum | French |
| Abraham Michelet d'Ennery - Joseph Khell von Khellburg - 1772-5-3 | Correspondence | Abraham Michelet d'Ennery | Joseph Khell von Khellburg | Jean Foy-Vaillant, Louis XV of France, Abbé Leblond | 03-05-1772 | Paris | Vienna, Kunsthistorisches Museum | French |
| Abraham Ortelius - Emanuel van Metheren - 1557-10-25 | Correspondence | Abraham Ortelius | Emanuel van Metheren | | 25-10-1557 JL | Antwerp | New York, The Morgan Library and Museum | Dutch |
| Abraham Ortelius - Emanuel van Metheren - 1559-7-3 | Correspondence | Abraham Ortelius | Emanuel van Metheren | | 03-07-1559 JL | Antwerp | | Dutch |
| Abraham Ortelius - Jacob Cool - 1586-01-09 | Correspondence | Abraham Ortelius | Jacob Cool | | 09-01-1586 | Antwerp | Brussels, Bibliothèque royale de Belgique | Latin |
| Abraham Ortelius - Jacob Cool - 1587-1-19 | Correspondence | Abraham Ortelius | Jacob Cool | Adolf Occo, Fulvio Orsini, Hubert Goltzius, Steven Winand Pigge, Sebastiano Erizzo, Enea Vico, Wolfgang Lazius, Costanzo Landi | 19-01-1587 | Antwerp | New York, The Morgan Library and Museum | Latin |
| Abraham Ortelius - Jacob Cool - 1590-08-25 | Correspondence | Abraham Ortelius | Jacob Cool | | 25-08-1590 | Antwerp | Austin, Harry Ransom Center | Latin |
| Abraham Ortelius - Jacob Cool - 1591-5-2 | Correspondence | Abraham Ortelius | Jacob Cool | Hans Woutneel, Robert Aske | 02-05-1591 | Antwerp | Paris, Fondation Custodia | Latin |
| Abraham Ortelius - Jacob Cool - 1592-5-6 | Correspondence | Abraham Ortelius | Jacob Cool | Joost Lips | 06-05-1592 | Antwerp | Brussels, Bibliothèque royale de Belgique | Latin |
| Abraham Ortelius - Jacob Cool - 1593-1-27 | Correspondence | Abraham Ortelius | Jacob Cool | Onofrio Panvinio | 27-01-1593 | Antwerp | | Latin |
| Abraham Ortelius - Jacob Cool - 1595-1-4 | Correspondence | Abraham Ortelius | Jacob Cool | William Camden, Hubert Goltzius | 04-01-1595 | Antwerp | | Latin |
| Abraham Ortelius - Jacob Cool - 1595-02-02 | Correspondence | Abraham Ortelius | Jacob Cool | Adolf Occo, Emanuel van Metheren | 02-02-1595 | Antwerp | | Latin |
| Abraham Ortelius - Jacob Cool - 1596-3-23 | Correspondence | Abraham Ortelius | Jacob Cool | | 23-03-1596 | Antwerp | The Hague, Koninklijke Bibliotheek | Latin |
| Abraham Ortelius - Jacob Cool - 1597-04-03 | Correspondence | Abraham Ortelius | Jacob Cool | | 03-04-1597 | Antwerp | | Latin |
| Abraham Ortelius - Jacob Cool - 1598-06-03 | Correspondence | Abraham Ortelius | Jacob Cool | Adolf Occo, Markus Welser | 03-06-1598 | Antwerp | Brussels, Bibliothèque royale de Belgique | Latin |
| Abraham Ortelius - Joost Lips - 1592 | Correspondence | Abraham Ortelius | Joost Lips | Andreas Schott | 01-01-1592 | Antwerp | Brussels, Bibliothèque royale de Belgique | Latin |
| Abraham Ortelius - William Camden - 1588-11-25 | Correspondence | Abraham Ortelius | William Camden | Jacob Cool | 25-11-1588 | | London, British Library | Latin |
| Abraham van Goorle - Jacob Cool - 1601-4-13 | Correspondence | Abraham van Goorle | Jacob Cool | Robert Bruce Cotton, Levinus Hulsius | 13-04-1601 | Delft | Leiden, Universiteitsbibliotheek | Dutch |
| Acciarino 2016 | Literature | Damiano Acciarino | | | | New York | | English |
| Achillini, Claudio - Poem | Manuscripts of Unpublished Works | Claudio Achillini | | Angelo Poliziano | | Bologna | Bologna, Biblioteca Universitaria | |
| Ackermann 1992 | Literature | Felix Ackermann | | Basilius Amerbach | | | | German |
| Addison 1726 | Literature | Joseph Addison | | | | London | | English |
| Addison 1727 | Literature | Joseph Addison | | | | Leiden | | Dutch |
| Addison 1795 | Literature | Joseph Addison | | Pedro Alonso O'Crouley | | Madrid | | Spanish |
| Addy 1987-1997 | Literature | John Addy | | Henry Prescott | | | | English, Latin |
| Adelheid Amalia von Schmettau - François Hemsterhuis - 1781-9-12 | Correspondence | Adelheid Amalia von Schmettau | François Hemsterhuis | Jacques-Philippe d'Orville | 12-09-1781 | Paderborn | Münster, Universitäts- und Landesbibliothek | French |
| Adelheid Amalia von Schmettau - François Hemsterhuis - 1781-9-28 | Correspondence | Adelheid Amalia von Schmettau | François Hemsterhuis | Jacques-Philippe d'Orville | 28-09-1781 | Münster | Münster, Universitäts- und Landesbibliothek | French |
| Adelheid Amalia von Schmettau - François Hemsterhuis - 1781-10-5 | Correspondence | Adelheid Amalia von Schmettau | François Hemsterhuis | Jacques-Philippe d'Orville | 05-10-1781 | Münster | Münster, Universitäts- und Landesbibliothek | French |
| Adelheid Amalia von Schmettau - François Hemsterhuis - 1783-3-14 | Correspondence | Adelheid Amalia von Schmettau | François Hemsterhuis | Philipp von Stosch | 14-03-1783 | Münster | Münster, Universitäts- und Landesbibliothek | French |
| Adelheid Amalia von Schmettau - François Hemsterhuis - 1785-2-15 | Correspondence | Adelheid Amalia von Schmettau | François Hemsterhuis | Pieter van Damme | 15-02-1785 | Münster | Münster, Universitäts- und Landesbibliothek | French |
| Adolf Occo - Abraham Ortelius - 1582-11-5 | Correspondence | Adolf Occo | Abraham Ortelius | Conrad Peutinger | 05-11-1582 | Augsburg | Austin, Harry Ransom Center | Latin |
| Adolf Occo - Abraham Ortelius - 1598-5-4 | Correspondence | Adolf Occo | Abraham Ortelius | Christophe Plantin, Jacob Cool, Jan Moretus, Johannes Vivianus | 04-05-1598 | Augsburg | The Hague, Koninklijke Bibliotheek | Latin |
| Adolf Occo - Jacob Cool - 1599-2-6 | Correspondence | Adolf Occo | Jacob Cool | Hubert Goltzius, Wolfgang Lazius, David Hoeschel | 06-02-1599 | Augsburg | Leiden, Universiteitsbibliotheek | Latin |
| Adriaan Reland - Antoine Galland - 1706-11-28 | Correspondence | Adriaan Reland | Antoine Galland | | 28-11-1706 | | | French |
| Agard 1611 | Literature | Antoine Agard | | | | Paris | | French |
| Aghion 2002 | Literature | Irène Aghion | | Jean-Jacques Barthélemy | | Oxford | | English |
| Agnethler 1746 | Literature | Michael Gottlieb Agnethler | | Johann Heinrich Schulze | | Leipzig | | Latin |
| Agnethler 1750 | Literature | Michael Gottlieb Agnethler | | Siegmund Jakob Baumgarten | | Halle | | German |
| Agnethler 1750-1752 | Literature | Michael Gottlieb Agnethler | | Johann Heinrich Schulze | | Halle | | German |
| Agostini 1649 | Literature | Leonardo Agostini | | Gaston d'Orléans | | Rome | | Italian |
| Agostini 1657 | Literature | Leonardo Agostini | | | | Rome | | Italian |
| Agostino Monanni - Leopoldo de' Medici - 1664-2-2 | Correspondence | Agostino Monanni | Leopoldo de' Medici | Francesco Gottifredi | 02-02-1664 | Rome | Florence, Archivio di Stato | Italian |
| Agostino Monanni - Leopoldo de' Medici - 1671-6-17 | Correspondence | Agostino Monanni | Leopoldo de' Medici | Antonio Cavalieri | 17-06-1671 | Rome | Florence, Archivio di Stato | Italian |
| Agostino Mosti - Abraham Ortelius - 1583-9-21 | Correspondence | Agostino Mosti | Abraham Ortelius | Pirro Ligorio | 21-09-1583 | Ferrara | The Hague, Koninklijke Bibliotheek | Latin |
| Agricola 1533 | Literature | Georgius Agricola | | Guillaume Budé, Leonardo Porto | | Basel | | Latin |
| Agricola 1550 | Literature | Georgius Agricola | | Andrea Alciati | | Basel | | Latin |
| Agricola 1550 by Ulisse Aldrovandi | Annotated Printed Books | Georgius Agricola | | | | Bologna | Bologna, Biblioteca Universitaria | |
| Aguilar 1999 | Literature | Francisco Aguilar Piñal | | Cándido María Trigueros | | Sevilla | | Spanish |
| Agustin - Orsini 1592 | Literature | Antonio Agustin, Fulvio Orsini | | | | Lyon | | Latin |
| Agustin 1587 | Literature | Antonio Agustin | | | | Tarragona | | Spanish |
| Agustin 1592 | Literature | Antonio Agustin | | | | Rome | | Italian |
| Agustin 1592 by Hillebrant Jacobsz van Wouw | Copies or Translations of Printed Books | Antonio Agustin | | Andreas Schott | | The Hague | The Hague, Rijksmuseum Meermanno-Westreenianum | |
| Agustin 1617 | Literature | Antonio Agustin | | Andreas Schott | | Antwerp | | Latin |
| Agustin 1744 | Literature | Antonio Agustin | | | | Madrid | | Spanish |
| Agustin 1772 | Literature | Antonio Agustin | | | | Lucca | | Italian, Spanish |
| Agustin 1774 | Literature | Antonio Agustin | | | | Lucca | | Italian, Spanish |
| Agustin, Antonio - Antonii Augustini Musei Antiquiora Numismata | Catalogues of Numismatic Collections | Antonio Agustin | | | | Madrid | Madrid, Biblioteca Nacional de España | |
| Agustin, Antonio - Suma de les monedes trobades a la llibreria de l'archebisbe de Tarragona Antoni Agustin | Catalogues of Numismatic Collections | Antonio Agustin | | Antonio Agustin | | Escorial | Escorial, Real Biblioteca del Monasterio de San Lorenzo de El Escorial | |
| Ainsworth 1719-1720 | Literature | Robert Ainsworth | | John Kemp | | London | | Latin |
| Ainsworth 1719-1720 by Thomas Birch | Annotated Printed Books | Robert Ainsworth | | John Kemp, Heneage Finch, 5th Earl of Winchilsea, Jean Gailhard, George Carteret, John Granville | | London | London, British Library | |
| Albani, Alessandro - Observations sur les commentaire de M. l’abbé Vénuti sur les médailles de cardinal Albani | Catalogues of Numismatic Collections | Alessandro Albani | | Jean-Jacques Barthélemy, Ridolfino Venuti | | Paris | Paris, Bibliothèque nationale de France, Cabinet des médailles | |
| Alberto Mazzoleni - Antonio Francesco Gori - 1740-2-15 | Correspondence | Alberto Mazzoleni | Antonio Francesco Gori | Jean Hardouin, Enrico Noris, Siwart Haverkamp | 15-02-1740 | Pontida | Florence, Biblioteca Marucelliana | Italian |
| Albertrandi 1799 | Literature | Jan Chrzciciel Albertrandi | | Stanisław August Poniatowski | | Warsaw | | Latin |
| Albertrandi 1805 | Literature | Jan Chrzciciel Albertrandi | | Stanisław August Poniatowski | | Warsaw | | Polish |
| Albertrandi, Jan Chrzciciel - Dactyliothecae... Stanislai Augusti gemmarumque cavo aut convexo opere insignium indiculus | Manuscripts of Unpublished Works | Jan Chrzciciel Albertrandi | | Stanisław August Poniatowski | | Lwów | Lviv, Baworowski Library | Latin |
| Alciati - Melanchthon 1530 | Literature | Andrea Alciati, Philipp Melanchthon | | Guillaume Budé | | Haguenau | | Latin |
| Alciati 1608 | Literature | Andrea Alciati | | | | Leiden | | Latin |
| Alderete 1614 | Literature | Bernardo de Alderete | | | | Antwerp | | Spanish |
| Aldrovandi, Ulisse - Methodus de nummis percussis | Manuscripts of Unpublished Works | Ulisse Aldrovandi | | Georgius Agricola | | Bologna | Bologna, Biblioteca Universitaria | Latin |
| Aldrovandi, Ulisse - Vocabula pertinentia ad militiam, ad vasa, ad ornatum muliebrem, ad instrumenta rustica, ad aedificia, ad domus suppellectilem, ad rem nummariam | Manuscripts of Unpublished Works | Ulisse Aldrovandi | | | | Bologna | Bologna, Biblioteca Universitaria | Latin |
| Aleandro 1617 | Literature | Girolamo Aleandro | | | | Paris | | Latin |
| Alessandro Albani - Wenzel Anton von Kaunitz-Rietberg - 1772-10-17 | Correspondence | Alessandro Albani | Wenzel Anton von Kaunitz-Rietberg | Joseph Eckhel | 17-10-1772 | Rome | Vienna, Österreichische Staatsarchiv | Italian |
| Alessandro Bassi - Ferdinando I de' Medici - 1580-5-6 | Correspondence | Alessandro Bassi | Ferdinando I de' Medici | | 06-05-1580 JL | Padua | Florence, Archivio di Stato | Italian |
| Alessandro Borgianni - Fulvio Orsini - 1598-3-20 | Correspondence | Alessandro Borgianni | Fulvio Orsini | | 20-03-1598 | Bologna | Vatican City, Biblioteca Apostolica Vaticana | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1565-2-16 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | | 16-02-1565 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1565-4-7 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | Agostino Mosti | 07-04-1565 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1565-5-5 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | Agostino Mosti, Enea Vico, Giovan Giacomo Bonzagni | 05-05-1565 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1566-4-3 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | | 03-04-1566 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1566-5-8 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | | 08-05-1566 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1567-2-19 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | | 19-02-1567 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1567-5-26 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | | 26-05-1567 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro de' Grandi - Alfonso II d'Este - 1568-3-31 | Correspondence | Alessandro de' Grandi | Alfonso II d'Este | Enea Vico, Pirro Ligorio | 31-03-1568 JL | Rome | Modena, Archivio Storico | Italian |
| Alessandro Gregorio Capponi - Antonio Francesco Gori - 1736-11-24 | Correspondence | Alessandro Gregorio Capponi | Antonio Francesco Gori | Francesco Palazzi, Gian Francesco Baldini, Benvenuto Cellini | 24-11-1736 | Rome | Florence, Biblioteca Marucelliana | Italian |
| Alessandro Gregorio Capponi - Antonio Francesco Gori - 1740-7-8 | Correspondence | Alessandro Gregorio Capponi | Antonio Francesco Gori | | 08-07-1740 | Malta | Florence, Biblioteca Marucelliana | Italian |
| Alessandro Gregorio Capponi - Antonio Francesco Gori - 1741-4-22 | Correspondence | Alessandro Gregorio Capponi | Antonio Francesco Gori | | 22-04-1741 | Malta | Florence, Biblioteca Marucelliana | Italian |
| Alessandro Gregorio Capponi - Antonio Francesco Gori - 1744-2-15 | Correspondence | Alessandro Gregorio Capponi | Antonio Francesco Gori | | 15-02-1744 | Rome | Florence, Biblioteca Marucelliana | Italian |
| Alexander Cunningham - Gisbert Cuper - 1703-12-24 | Correspondence | Alexander Cunningham | Gisbert Cuper | Andrew Fountaine, Thomas Herbert | 24-12-1703 | | The Hague, Koninklijke Bibliotheek | Latin |
| Alexander Cunningham - Gisbert Cuper - 1704 | Correspondence | Alexander Cunningham | Gisbert Cuper | Ezechiel Spanheim | 01-01-1704 | | The Hague, Koninklijke Bibliotheek | Latin |
| Alexander Cunningham - Gisbert Cuper - 1704-09-13 | Correspondence | Alexander Cunningham | Gisbert Cuper | Lorenz Beger | 13-09-1704 | London | The Hague, Koninklijke Bibliotheek | French |
| Alexander Cunningham - Gisbert Cuper - 1704-10-30 | Correspondence | Alexander Cunningham | Gisbert Cuper | Lorenz Beger | 30-10-1704 | London | The Hague, Koninklijke Bibliotheek | French |
| Alexander Cunningham - Gisbert Cuper - 1705-10-15 | Correspondence | Alexander Cunningham | Gisbert Cuper | Francesco Bianchini, Francesco de' Ficoroni, Filippo Del Torre, Enrico Noris, Andrew Fountaine, Giusto Fontanini, Nicolas Chevalier | 15-10-1705 | | The Hague, Koninklijke Bibliotheek | French |
| Alexander Cunningham - Gisbert Cuper - 1706-02-20 | Correspondence | Alexander Cunningham | Gisbert Cuper | | 20-02-1706 | Utrecht | The Hague, Koninklijke Bibliotheek | French |
| Alexander Cunningham - Gisbert Cuper - undated | Correspondence | Alexander Cunningham | Gisbert Cuper | Jacques Bary, Louis-Auguste de Bourbon | | Utrecht | The Hague, Koninklijke Bibliotheek | French |
| Alexander-Friedrich-Wilhelm von Seckendorff - Joseph Eckhel - 1788-7-28 | Correspondence | Alexander-Friedrich-Wilhelm von Seckendorff | Joseph Eckhel | | 28-07-1788 | Brussels | Vienna, Kunsthistorisches Museum | German |
| Alexandre-Xavier Panel - Claude-Nicolas Chifflet - 1726-7-1 | Correspondence | Alexandre-Xavier Panel | Claude-Nicolas Chifflet | | 01-07-1726 | Aix-en-Provence | Besançon, Bibliothèque municipale | French |
| Alexandre-Xavier Panel - Claude-Nicolas Chifflet - s.d. | Correspondence | Alexandre-Xavier Panel | Claude-Nicolas Chifflet | François Remuzat | | Avignon | Besançon, Bibliothèque municipale | French |
| Alexandre-Xavier Panel - Henri-Joseph de Thomassin de Mazaugues - 1728-9-13 | Correspondence | Alexandre-Xavier Panel | Henri-Joseph de Thomassin de Mazaugues | | 13-09-1728 | Aix-en-Provence | Aix-en-Provence, Bibliothèque de Méjanes | French |
| Alexandre-Xavier Panel - Henri-Joseph de Thomassin de Mazaugues - 1742-11-10 | Correspondence | Alexandre-Xavier Panel | Henri-Joseph de Thomassin de Mazaugues | Jean Bouhier, Victor-Marie d'Estrées, Jean Hardouin, Joseph Pellerin, Charles d'Orléans de Rothelin, Louis XV of France, Etienne Souciet, Gian Domenico Tiepolo, Christian Sigismund Liebe, Thomas Herbert, Henri de Beauveau | 10-11-1742 | Lyon | Madrid, Biblioteca Nacional de España | French |
| Alexandre-Xavier Panel - Jean-Alphonse Turrettini - 1733-5-6 | Correspondence | Alexandre-Xavier Panel | Jean-Alphonse Turrettini | Andreas Morell | 06-05-1733 | Marseille | | French |
| Alexandre-Xavier Panel - Jean-Bouhier - 1742-5-17 | Correspondence | Alexandre-Xavier Panel | Jean Bouhier | | 17-05-1742 | Lyon | Paris, Bibliothèque nationale de France | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1729-6-23 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 23-06-1729 | Avignon | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1729-7-21 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 21-07-1729 | Avignon | Avignon, Bibliothèque municipale | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1731-10-29 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | Anselmo Maria Banduri, Henri-Joseph de Thomassin de Mazaugues, Cardin Le Bret | 29-10-1731 | Avignon | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1731-11-26 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | Anselmo Maria Banduri, Jean Foy-Vaillant, Jean-Pierre Rigord | 26-11-1731 | | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1731-12-22 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 22-12-1731 | Avignon | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1732-2-12 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 12-02-1732 | Avignon | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1732-3-28 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 28-03-1732 | Avignon | Avignon, Bibliothèque municipale | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1732-10-23 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 23-10-1732 | Avignon | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Jean-François Séguier - 1737-4-10 | Correspondence | Alexandre-Xavier Panel | Jean-François Séguier | | 10-04-1737 | Lyon | Nîmes, Bibliothèque Carré d'Art | French |
| Alexandre-Xavier Panel - Joseph de Seytres de Caumont - 1734-3-4 | Correspondence | Alexandre-Xavier Panel | Joseph de Seytres de Caumont | Scipione Maffei, Jean Hardouin | 04-03-1734 | Ornex | Avignon, Bibliothèque municipale | French |
| Alexandre-Xavier Panel - Joseph de Seytres de Caumont - 1734-3-29 | Correspondence | Alexandre-Xavier Panel | Joseph de Seytres de Caumont | Scipione Maffei, Jean Hardouin | 29-03-1734 | Ornex | Avignon, Bibliothèque municipale | French |
| Alexandre-Xavier Panel - Joseph Pellerin - 1760-12-15 | Correspondence | Alexandre-Xavier Panel | Joseph Pellerin | Charles d'Orléans de Rothelin, Onorio Arrigoni, Girolamo Corraro, Felipe V of Spain, Francisco Miguel de Goyeneche y Balanza | 15-12-1760 | Madrid | Paris, Bibliothèque nationale de France | French |
| Alexandre-Xavier Panel - Joseph Pellerin - 1761-2-23 | Correspondence | Alexandre-Xavier Panel | Joseph Pellerin | Jean Foy-Vaillant, Charles d'Orléans de Rothelin, Jean-Jacques Barthélemy, Félix Cary, Francisco Miguel de Goyeneche y Balanza | 23-02-1761 | Madrid | Paris, Bibliothèque nationale de France | French |
| Alfonso Del Testa - Bianca Cappello - 1582-3-15 | Correspondence | Alfonso Del Testa | Bianca Cappello | | 15-03-1582 JL | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1582-3-31 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 31-03-1582 JL | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1584-1-19 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 19-01-1584 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1585-2-15 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | Ercole Basso | 15-02-1585 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1585-12-6 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | Pier Donato Cesi | 06-12-1585 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1585-12-13 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 13-12-1585 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1586-10-28 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 28-10-1586 | Siena | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1586-12-28 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 28-12-1586 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1587-1-8 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | Ercole Basso, Domenico Compagni | 08-01-1587 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1587-1-16 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | Domenico Compagni | 16-01-1587 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1587-1-23 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | Domenico Compagni | 23-01-1587 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1587-2-19 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 19-02-1587 | Rome | Florence, Archivio di Stato | Italian |
| Alfonso Del Testa - Francesco I de' Medici - 1587-3-27 | Correspondence | Alfonso Del Testa | Francesco I de' Medici | | 27-03-1587 | Rome | Florence, Archivio di Stato | Italian |
| Algernon Seymour - William Stukeley - 1727-04-20 | Correspondence | Algernon Seymour | William Stukeley | Heneage Finch, 5th Earl of Winchilsea, John Creyke | 20-04-1727 | | | English |
| Allen 1970 | Literature | Derek F. Allen | | William Stukeley | | London | | English |
| Allen et al. 1906-1958 | Literature | Percy Stafford Allen, Helen Mary Allen, Heathcote William Garrod | | Desiderius Erasmus | | Oxford | | Latin |
| Allestry - Martyn - Oldenburg 1772 | Literature | James Allestry, John Martyn, Henry Oldenburg | | | | London | | English |
| Allier de Hauteroche 1822 | Literature | Louis Allier de Hauteroche | | Nemsey Osman-Bey | | Paris | | French |
| Almagro Gorbea 1999 | Literature | Martin Almagro Gorbea | | | | Madrid | | Spanish |
| Alphonse de Rambervillers - Nicolas-Claude Fabri de Peiresc - 1620-9-8 | Correspondence | Alphonse de Rambervillers | Nicolas-Claude Fabri de Peiresc | | 08-09-1620 | Vic-sur-Seille | Paris, Bibliothèque nationale de France | French |
| Alphonse de Rambervillers - Nicolas-Claude Fabri de Peiresc - 1620-9-18 | Correspondence | Alphonse de Rambervillers | Nicolas-Claude Fabri de Peiresc | | 18-09-1620 | Vic-sur-Seille | Paris, Bibliothèque nationale de France | French |
| Alphonse de Rambervillers - Nicolas-Claude Fabri de Peiresc - 1620-9-30 | Correspondence | Alphonse de Rambervillers | Nicolas-Claude Fabri de Peiresc | | 30-09-1620 | Vic-sur-Seille | Paris, Bibliothèque nationale de France | French |
| Alphonse de Rambervillers - Nicolas-Claude Fabri de Peiresc - 1620-10-30 | Correspondence | Alphonse de Rambervillers | Nicolas-Claude Fabri de Peiresc | | 30-10-1620 | Vic-sur-Seille | Paris, Bibliothèque nationale de France | French |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1697-10-30 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | | 30-10-1697 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1697-11-13 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | | 13-11-1697 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1698-7-23 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Mezzabarba Birago, Jeanne-Baptiste d'Albert de Luynes, Francesco Antonio Renzi | 23-07-1698 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1698-7-30 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Mezzabarba Birago, Jeanne-Baptiste d'Albert de Luynes | 30-07-1698 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1698-8-20 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Mezzabarba Birago, Jeanne-Baptiste d'Albert de Luynes | 20-08-1698 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1698-8-27 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Mezzabarba Birago, Jeanne-Baptiste d'Albert de Luynes | 27-08-1698 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1698-10-15 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Mezzabarba Birago, Jeanne-Baptiste d'Albert de Luynes | 15-10-1698 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1698-11-5 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Mezzabarba Birago, Jeanne-Baptiste d'Albert de Luynes | 05-11-1698 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1699-3-4 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | | 04-03-1699 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1699-6-3 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Jeanne-Baptiste d'Albert de Luynes, Francesco Antonio Renzi, Charles-Joseph-Procope de Ligne | 03-06-1699 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1699-7-29 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Francesco Antonio Renzi, Michel Dervieux, Charles-Joseph-Procope de Ligne | 29-07-1699 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1699-8-11 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | | 11-08-1699 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1699-9-23 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Michel Dervieux | 23-09-1699 | Milan | Bologna, Archivio di Stato | Italian |
| Ambrogio Besozzi - Giuseppe Magnavacca - 1705-10-21 | Correspondence | Ambrogio Besozzi | Giuseppe Magnavacca | Capellano Maggiore, Charles-Joseph-Procope de Ligne | 21-10-1705 | Milan | Bologna, Archivio di Stato | Italian |
| Amendola 2010 | Literature | Adriano Amendola | | Leonardo Agostini | | Venice | | Italian |
| Amico 1741 | Literature | Vito Maria Amico | | | | Catania | | Latin |
| Amiet 1883 | Literature | Jakob Amiet | | Andreas Morell | | Bern | | German |
| Ammonio, Taddeo - Descriptio Musei Tadaei Amonii Prioris Capituli S. Petronii - Bologna, Archivio di Stato - FMC, s. IV, b. 74/734 | Catalogues of Numismatic Collections | Gian Giacomo Amadei | | Taddeo Amonio | | Bologna | Bologna, Archivio di Stato | |
| Andrea Rubbi - Pietro Santi - 1795-2-21 | Correspondence | Andrea Rubbi | Pietro Santi | | 21-02-1795 | Venice | | Italian |
| Andrea Rubbi - Pietro Santi - 1795-7-11 | Correspondence | Andrea Rubbi | Pietro Santi | | 11-07-1795 | Venice | | Italian |
| Andrea Rubbi - Pietro Santi - 1796-1-19 | Correspondence | Andrea Rubbi | Pietro Santi | Charles Patin, Louis Savot | 19-01-1796 | Venice | | Italian |
| Andrea Rubbi - Pietro Santi - 1796-4-4 | Correspondence | Andrea Rubbi | Pietro Santi | Scipione Maffei, Gasparo Luigi Oderico, Francesco Antonio Zaccaria | 04-04-1796 | Venice | | Italian |
| Andrea Staurino - Leopoldo de' Medici - 1657-10-4 | Correspondence | Andrea Staurino | Leopoldo de' Medici | | 04-10-1657 | Tripoli | Florence, Archivio di Stato | Italian |
| Andreas Morell - Albert Baldinger - 1702-4-5 | Correspondence | Andreas Morell | Albert Baldinger | Francesco Bianchini, Francesco de' Ficoroni, Fulvio Orsini, Charles Patin, Louis XIV of France, Pietro Santi Bartoli | 05-04-1702 | Arnstadt | Paris, Bibliothèque nationale de France | Latin |
| Andreas Morell - Andrew Fountaine - 1702-1 | Correspondence | Andreas Morell | Andrew Fountaine | Adolf Occo, Fulvio Orsini, Antoine Galland, Jacopo Strada, Lorenz Beger, Antonio Capello, Charles Patin, Sebastiano Bianchi, Carlo Torta, Thomas Herbert, Anton Günther von Schwarzburg-Arnstadt, Nicolò Bon, Andrea Cornaro, Marco Ruzzini, Peter Lambeck, Daniel Nessel, Luigi Ferdinando Marsili | 01-01-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Andrew Fountaine - 1702-4-4 | Correspondence | Andreas Morell | Andrew Fountaine | Francesco de' Ficoroni, Pietro Morosini, Nicolò Bon, Marco Ruzzini | 04-04-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Andrew Fountaine - 1702-5 | Correspondence | Andreas Morell | Andrew Fountaine | Francesco de' Ficoroni, Enrico Noris, Charles-Joseph-Procope de Ligne, Thomas Herbert, Anton Günther von Schwarzburg-Arnstadt, Nicolò Bon, Giovanni Battista Marinella | 01-05-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Andrew Fountaine - 1702-5-24 | Correspondence | Andreas Morell | Andrew Fountaine | Taddeo Amonio, Francesco de' Ficoroni, Giuseppe Magnavacca, Lorenz Beger, Antonio Magliabechi, Enrico Noris, Albert Baldinger, Gaspare Carpegna, Charles-Joseph-Procope de Ligne, Sebastiano Bianchi, Paul Lucas, Pietro Ottoboni, Carlo Torta, Pietro Santi Bartoli, Gottfried Wilhelm Leibniz, Anton Günther von Schwarzburg-Arnstadt | 24-05-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Andrew Fountaine - 1702-9-20 | Correspondence | Andreas Morell | Andrew Fountaine | Francesco de' Ficoroni, Charles-Joseph-Procope de Ligne, Carlo Torta, Jean-Baptiste Colbert de Seignelay | 20-09-1702 | Arnstadt | London, British Library | French |
| Andreas Morell - Charles-Joseph-Procope de Ligne - 1702-4-4 | Correspondence | Andreas Morell | Charles-Joseph-Procope de Ligne | Jean Foy-Vaillant, Pierre Séguin, Ranuccio II Farnese, Lorenz Beger, Charles Patin, Louis XIV of France, Andrew Fountaine, Jean Tristan de Saint-Amant, Pierre de Carcavi, Anton Günther von Schwarzburg-Arnstadt, Pierre Cherchemont | 04-04-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Charles-Joseph-Procope de Ligne - 1702-5-18 | Correspondence | Andreas Morell | Charles-Joseph-Procope de Ligne | Leonardo Agostini, Antonio Agustin, Jean Foy-Vaillant, Francesco Gottifredi, Christina of Sweden, Francesco Cameli, Charles Patin, Louis XIV of France, Jacob de Wilde, Giovanni de Lazara, Vincencio Juan de Lastanosa, Livio Odescalchi, Marco Ruzzini | 18-05-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Charles-Joseph-Procope de Ligne - 1702-5-24 | Correspondence | Andreas Morell | Charles-Joseph-Procope de Ligne | Gisbert Cuper, Charles Patin, Andrew Fountaine, Carlo Torta, Anton Günther von Schwarzburg-Arnstadt, Nicolò Bon | 24-05-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Charles-Joseph-Procope de Ligne - 1702-6-15 | Correspondence | Andreas Morell | Charles-Joseph-Procope de Ligne | Jean Foy-Vaillant, Gisbert Cuper, Jean Hardouin, Steven Winand Pigge, Wolfgang Lazius, Antonio Capello, Ezechiel Spanheim, Andrew Fountaine, Nicolò Bon, Girolamo Corraro, Jan Gruter | 15-06-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Charles-Joseph-Procope de Ligne - 1702-10-18 | Correspondence | Andreas Morell | Charles-Joseph-Procope de Ligne | Antoine Galland, Andrew Fountaine, Claude Saumaise, Anton Günther von Schwarzburg-Arnstadt | 18-10-1702 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Charles-Joseph-Procope de Ligne - 1703-1-5 | Correspondence | Andreas Morell | Charles-Joseph-Procope de Ligne | Jean Foy-Vaillant, Antoine Galland, Nicolas-Joseph Foucault, Christina of Sweden, Francesco Cameli, Charles Olier de Nointel, Jacob Spon, Louis XIV of France, Andrew Fountaine, Gottfried Wilhelm Leibniz, Anton Günther von Schwarzburg-Arnstadt, Nicolò Bon | 05-01-1703 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Claude Nicaise - 1697 | Correspondence | Andreas Morell | Claude Nicaise | Ezechiel Spanheim | 01-01-1697 | Arnstadt | Paris, Bibliothèque nationale de France | French |
| Andreas Morell - Enrico Noris - 1691 | Correspondence | Andreas Morell | Enrico Noris | | 01-01-1691 | | Rome, Biblioteca Angelica | |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-6-15 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | Anton Günther von Schwarzburg-Arnstadt | 15-06-1701 | Arnstadt | | French |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-6-28 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | Ezechiel Spanheim | 28-06-1701 | Arnstadt | | French |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-7-12 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | François-Michel Le Tellier de Louvois | 12-07-1701 | Arnstadt | | French |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-7-19 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | Hubert Goltzius, Francesco Mezzabarba Birago, Louis XIV of France, Ezechiel Spanheim, Anton Günther von Schwarzburg-Arnstadt | 19-07-1701 | Arnstadt | | French |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-7-26 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | Ezechiel Spanheim | 26-07-1701 | Arnstadt | | French |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-8-9 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | Lorenz Beger, Ezechiel Spanheim, Christian Schlegel, Friedrich I of Prussia, Jakob Perizonius, Eberhard von Danckelmann | 09-08-1701 | Arnstadt | | French |
| Andreas Morell - Gottfried Wilhelm Leibniz - 1701-9-13 | Correspondence | Andreas Morell | Gottfried Wilhelm Leibniz | | 13-09-1701 | Arnstadt | | French |
