21From 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...
22From Benjamin Franklin to Peter Collinson, 25 May 1747 (Franklin Papers)
Copy: American Academy of Arts and Sciences In my last I informed you that In pursuing our...
23From Benjamin Franklin to Peter Collinson, 29 December 1754 (Franklin Papers)
ALS : Pierpont Morgan Library I wrote a few Lines by a Vessel that went from hence about 2 Weeks...
24From Benjamin Franklin to Peter Collinson, 18 October 1748 (Franklin Papers)
ALS : Pierpont Morgan Library I have receiv’d your several Favours of April 1. June 2. June 14...
25From Benjamin Franklin to Peter Collinson, 26 June 1755 (Franklin Papers)
ALS : Pierpont Morgan Library Mr. Bartram brings a Box to my House, which has a little Vacancy in...
26From Benjamin Franklin to Peter Collinson, 23 November 1753 (Franklin Papers)
MS not found; reprinted from Benjamin Franklin, Experiments and Observations on Electricity...
27From Benjamin Franklin to Peter Collinson, 15 June 1756 (Franklin Papers)
ALS : University of Pennsylvania Library I can now only acknowledge the Receipt of your Favours...
28From Benjamin Franklin to Peter Collinson, 14 August 1747 (Franklin Papers)
ALS : Pierpont Morgan Library I have lately written two long Letters to you on the Subject of...
29From Benjamin Franklin to Peter Collinson, 29 April 1749 (Franklin Papers)
Copy: American Academy of Arts and Sciences I now send you some Further Experiments and...
30From Benjamin Franklin to Peter Collinson, 24 September 1764 (Franklin Papers)
ALS : Pierpont Morgan Library I received your kind Letter of June 29. We hear nothing here of the...