Johann Heinrich Lambert: Correspondence

As many of his contemporaries, Lambert had a vast correspondence with a wide variety of people. Although his correspondence was never published in a historical-critical edition, a rather large portion of his correspondence (mainly the correspondence in German) has been published, thanks to Johann III Bernoulli, and later on, thanks to Karl Bopp.

1. Deutscher gelehrter Briefwechsel, 5 Bände, Berlin, Selbstverlag (1781-1787)

Edited by Johann III Bernoulli, with notes and additions by Lambert's correspondents that were sollicited by Bernoulli to complement the correspondence.
2. Correspondence edited by Karl Bopp from the manuscripts in Gotha
3. Further Correspondence