31From Benjamin Franklin to Cadwallader Colden, [February 1746] (Franklin Papers)
ALS : New-York Historical Society I receiv’d yours with others enclos’d for Mr. Bertram and Mr....
32From Benjamin Franklin to Cadwallader Colden, 28 November 1745 (Franklin Papers)
ALS : New-York Historical Society I shall be very willing and ready, when you think proper to...
33From Benjamin Franklin to Cadwallader Colden, 15 August 1745 (Franklin Papers)
ALS : New-York Historical Society I receiv’d your Favour of the 20th past, with your medical...
34From Benjamin Franklin to Cadwallader Colden, 25 October 1744 (Franklin Papers)
ALS : New-York Historical Society I communicated your Piece on Fluxions to Mr. Logan, and being...
35From Benjamin Franklin to Cadwallader Colden, 13 September 1744 (Franklin Papers)
ALS : Yale University Library Dr. Mitchel, a Gentleman from Virginia, came to Town this Morning...
36From Benjamin Franklin to Cadwallader Colden, 5 April 1744 (Franklin Papers)
ALS : New-York Historical Society; also transcript: Library of Congress Happening to be in this...
37From Benjamin Franklin to Cadwallader Colden, 4 November 1743 (Franklin Papers)
ALS : New-York Historical Society; also transcript: Library of Congress I received the Favour of...