1From Benjamin Franklin to Cadwallader Colden, 13 August 1747 (Franklin Papers)
ALS : New-York Historical Society I am glad the electrical Observations please you. I leave them...
2From 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...
3From Benjamin Franklin to Cadwallader Colden, 6 August 1747 (Franklin Papers)
ALS : New-York Historical Society; draft: American Philosophical Society The Observations I sent...
4From Benjamin Franklin to Cadwallader Colden, 27 August 1747 (Franklin Papers)
ALS : Yale University Library This just serves to enclose you a Letter from our Friend Bertram;...
5From Benjamin Franklin to Cadwallader Colden, 14 May 1752 (Franklin Papers)
ALS : New-York Historical Society I find Parker has been indiscreet enough, to print a Piece in...
6From 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...
7From Benjamin Franklin to Cadwallader Colden, 25 October 1753 (Franklin Papers)
ALS : New-York Historical Society This last Summer I have enjoy’d very little of the Pleasure of...
8From Benjamin Franklin to Cadwallader Colden, 21 July 1754 (Franklin Papers)
ALS : New-York Historical Society I wrote a Line to you from your Landing, promising to send you...
9From Benjamin Franklin to Cadwallader Colden, 30 July 1747 (Franklin Papers)
ALS : Yale University Library I receiv’d your Favour of the 26th. which I shall answer at large...
10From Benjamin Franklin to Cadwallader Colden, 5 December 1760 (Franklin Papers)
ALS : New-York Historical Society I take this first Opportunity of congratulating you most...