1From Benjamin Franklin to Giambatista Beccaria, 13 July 1762 (Franklin Papers)
MS not found; reprinted from Benjamin Franklin, Experiments and Observations on Electricity ,...
2From Benjamin Franklin to Giambatista Beccaria, 21 September 1768 (Franklin Papers)
Translated from the Italian in Giuseppe A. F. G. Eandi, Memorie istoriche intorno gli studi del...
3From Benjamin Franklin to Giambatista Beccaria, 11 August 1773 (Franklin Papers)
Retranslated from the Italian in Giuseppe A. G. S. Eandi, Memorie istoriche intorno gli studi del...
4From Benjamin Franklin to Giambatista Beccaria, 20 March 1774 (Franklin Papers)
ALS (letterbook draft): American Philosophical Society; additions after the signature...
5From Benjamin Franklin to Giambatista Beccaria, 19 November 1779 (Franklin Papers)
LS : Yale University Library; AL (draft) and copy: Library of Congress Having sometime since...
6From Benjamin Franklin to Beccaria, 19 February 1781 (Franklin Papers)
Press copy: Library of Congress I received lately through the hands of your Ambassador, the...