1To Benjamin Franklin from the Comte de Mercy-Argenteau, 15 April 1783 (Franklin Papers)
L : American Philosophical Society Note. Le Professeur Märter chargé par L’Empereur de recueillir...
2To Benjamin Franklin from Samuel Vaughan, Jr., 15 April 1783 (Franklin Papers)
AL : American Philosophical Society Mr S Vaughan Junr. has the honor to present his most...