Master list (pdf) of all 602 L-numbers, their Leeuwenhoek number, and their Collected Letters number
Leeuwenhoek did not publish any letters after 1718 in book form with his own summaries. The summary below comes from Alle de Brieven / Collected Letters.
In this cover letter to Leeuwenhoek’s letter of the same date to the Royal Society, Leeuwenhoek determined that no little animals are to be found in the pustules of those with smallpox.
Signed autograph letter. The manuscript is to be found in London, Royal Society, Early Letters, L.4.73, 3 quarto pages.
A contemporary English translation by James Jurin is to be found in London, Royal Society, Early Letters, L.4.74; 2 pages. This translation was read at the 15 November 1722 meeting of the Royal Society; Royal Society, Journal Book Original, vol. 13.
