11To Benjamin Franklin from Peter Collinson, 27 March 1751 (Franklin Papers)
ALS : American Philosophical Society I am now so prodigiously Engagd as well in my publick...
12To Benjamin Franklin from Peter Collinson, 3 June 1752 (Franklin Papers)
ALS : American Philosophical Society I have wrote you before possibly you may receive Two Letters...
13To Benjamin Franklin from Peter Collinson, 7 July 1752 (Franklin Papers)
ALS : American Philosophical Society I had the pleasure of my Dear friends Letter of 21 March...
14To Benjamin Franklin from Peter Collinson, 15 August 1752 (Franklin Papers)
ALS : Haverford College Library I had the pleasure of my Dear friend Letter of June 19th: It...
15To Benjamin Franklin from Peter Collinson, 27 September 1752 (Franklin Papers)
ALS : American Philosophical Society In thine of June 19 mention is made of not receiveing a...
16To Benjamin Franklin from Peter Collinson, 27 January 1753 (Franklin Papers)
ALS : American Philosophical Society Tho’ I am much engaged yett I cannot Lett Mesnard Sail...
17To Benjamin Franklin from Peter Collinson, 7 March 1753 (Franklin Papers)
ALS : Haverford College I hope Mine by First Ships with some Books for L:C: [Library Company] as...
18To Benjamin Franklin from Peter Collinson, 21 March 1753 (Franklin Papers)
ALS : American Philosophical Society By the Conveyance of our friend Mr. Watson whose Letter I...
19To Benjamin Franklin from Peter Collinson, 3 July 1753 (Franklin Papers)
ALS : American Philosophical Society Received June the 30. 1753. On Board the London for...
20To Benjamin Franklin from Peter Collinson, 20 July 1753 (Franklin Papers)
ALS : American Philosophical Society It is a great pleasure to Mee to receive so many repeated...