311From Benjamin Franklin to Abiah Franklin, 12 April 1750 (Franklin Papers)
ALS : Boston Athenaeum We received your kind Letter of the 2d Instant, and are glad to hear you...
312From Benjamin Franklin to William Strahan, 2 June 1750 (Franklin Papers)
MS not found; facsimiles of ALS : Historical Society of Pennsylvania and Boston Public Library...
313Last Will and Testament, 22 June 1750 (Franklin Papers)
ADS (mutilated): American Philosophical Society I Benjamin Franklin of the City of Philadelphia...
314From Benjamin Franklin to Cadwallader Colden, 28 June 1750 (Franklin Papers)
ALS : New-York Historical Society I wrote a Line to you last Post, and sent you some Electrical...
315From Benjamin Franklin to Peter Collinson, 27 July 1750 (Franklin Papers)
Copy: American Academy of Arts and Sciences Mr. Watson I believe wrote his Observations on my...
316From Benjamin Franklin to Peter Collinson, 29 July 1750 (Franklin Papers)
Copy: American Academy of Arts and Sciences As you first put us on Electrical Experiments by...
317Opinions and Conjectures, [29 July 1750] (Franklin Papers)
Copy: American Academy of Arts and Sciences Opinions and Conjectures concerning the Properties...
318Paper on the Academy, [31 July 1750] (Franklin Papers)
MS Minutes of the Common Council: Free Library of Philadelphia Within a few weeks of their...
319From Benjamin Franklin to Samuel Johnson, 9 August 1750 (Franklin Papers)
ALS : Columbia University Library At my Return home I found your Favour of June the 28th. with...
320From Benjamin Franklin to Samuel Johnson, 23 August 1750 (Franklin Papers)
MS not found; reprinted from The Port Folio , n.s., II (1809), 115–16. We received your favour of...