'The book was originally intended for publication in 1666, but half way through its printing it was destroyed by the Great Fire, and it did not finally came out until 1672. There seems to be only a single surviving copy of the lost 1666 edition, today in the British Library BL (C133 g 3). The copy has no title page and goes only to p. 280, where, at bottom of the final page, someone (Marsham?) has written ‘Exemplaria quingenta, huc usq[ue] impressa, incendio Londinensi perierunt, 4th die Sept. a0 1666’ [500 copies, printed this far, perished in the fire of London, 4th September 1666]. The two editions are basically the same, but the 1672 one has more material, and sometimes it is printed in a different order.' (Burnett 2020b, p. 551) (en)
