11From Benjamin Franklin to Peter Collinson, 23 November 1753 (Franklin Papers)
MS not found; reprinted from Benjamin Franklin, Experiments and Observations on Electricity...
12From 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...
13From 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...
14From Benjamin Franklin to Peter Collinson, 4 August 1762 (Franklin Papers)
ALS : Pierpont Morgan Library I did not receive my Dear Friend’s Letter of yesterday till I came...
15Deborah Franklin to Peter Collinson, 30 April 1755 (Franklin Papers)
LS : Huntington Library Mr. Franklin is from home, and can not have by this Conveyance an...
16From Benjamin Franklin to Peter Collinson, 1 January 1757 (Franklin Papers)
Original ALS not found; duplicate: Pierpont Morgan Library I wrote you yesterday a Line or two...
17From Benjamin Franklin to Peter Collinson, 19 December 1763 (Franklin Papers)
ALS : Yale University Library I am but lately return’d from my Tour of these Northern Colonies,...
18From Benjamin Franklin to Peter Collinson, 29 July 1754 (Franklin Papers)
ALS : American Philosophical Society I am just return’d from Albany, where were Commissioners...
19From Benjamin Franklin to Peter Collinson, 5 November 1756 (Franklin Papers)
ALS : Pierpont Morgan Library; also extract: The Royal Society The above is a Copy of my last,...
20From Benjamin Franklin to Peter Collinson, 9 May 1753 (Franklin Papers)
Copy: New York Public Library; also copies: Public Record Office, American Philosophical Society,...