1Joseph Breintnall to Peter Collinson, 7 November 1732 (Franklin Papers)
ALS : British Museum; also MS Minute Book: Library Company of Philadelphia Your Goodness in...
2From Benjamin Franklin to Peter Collinson, 28 March 1747 (Franklin Papers)
MS not found; reprinted from extract in Benjamin Franklin, Experiments and Observations on...
3From 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...
4To Benjamin Franklin from Peter Collinson, 1 June 1747 (Franklin Papers)
ALS : American Philosophical Society I shall be pleased to Hear that Mine per Mesnard and Dowers...
5From Benjamin Franklin to Peter Collinson, 28 July 1747 (Franklin Papers)
Copy: American Academy of Arts and Sciences The inclosed is a Copy of my last, which went by the...
6From 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...
7To Benjamin Franklin from Peter Collinson, 12 April 1748 (Franklin Papers)
ALS : Library Company of Philadelphia I was very fortunate to receive both thy Curious...
8To Benjamin Franklin from Peter Collinson, 14 June 1748 (Franklin Papers)
ALS : University of Pennsylvania Library The Bearer Mr. Kalm Is an Ingenious Man and comes over...
9From 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...
10From 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...
11To Benjamin Franklin from Peter Collinson, 14 September 1749 (Franklin Papers)
ALS : Historical Society of Pennsylvania I was unwilling to loose the Opertunity per Cap. Rice—So...
12To Benjamin Franklin from Peter Collinson, 5 February 1750 (Franklin Papers)
ALS : American Philosophical Society I have so many Obligations to my kind Friend, that I...
13James Logan to Peter Collinson, 28 February 1750 (Franklin Papers)
Letterbook copy: Historical Society of Pennsylvania I have Spent most of this day for the first...
14From Benjamin Franklin to Peter Collinson, [2 March 1750] (Franklin Papers)
MS not found; reprinted from The Gentleman’s Magazine , XX (1750), 208. I was very much pleased...
15To Benjamin Franklin from Peter Collinson, 25 April 1750 (Franklin Papers)
ALS : American Philosophical Society I wish I have before this advised my Worthy Friend that his...
16To Benjamin Franklin from Peter Collinson, [June 1750] (Franklin Papers)
AL (fragment): Library Company of Philadelphia [ First part missing ] Pray give my respects to...
17To Benjamin Franklin from Peter Collinson, 3 July 1750 (Franklin Papers)
ALS : Historical Society of Pennsylvania I received thy Letter from the Trustees and Bill per...
18To Benjamin Franklin from Peter Collinson, 11 July 1750 (Franklin Papers)
ALS : Library Company of Philadelphia If I catch the Bagg before its taken away its more than I...
19From 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...
20From 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...
21From Benjamin Franklin to Peter Collinson, 4 February 1751 (Franklin Papers)
ALS : The Royal Society I receiv’d yours of Oct. 4. via New England, with the Account of what you...
22To Benjamin Franklin from Peter Collinson, 22 February 1751 (Franklin Papers)
ALS : Yale University Library On the other Side is the Account of the Books I now send. I next...
23To 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...
24From Benjamin Franklin to Peter Collinson, 21 May 1751 (Franklin Papers)
ALS : Pierpont Morgan Library Budden is arrived, and every thing you sent per him come safe to...
25From Benjamin Franklin to Peter Collinson, 29 June 1751 (Franklin Papers)
Copy: The Royal Society In Capt. Waddels Account *Ph. Tr. No. 492. p. III . of the Effects of...
26From Benjamin Franklin to Peter Collinson, 1752 (Franklin Papers)
Printed in Benjamin Franklin, Experiments and Observations on Electricity (London, 1769), pp....
27From Benjamin Franklin to Peter Collinson, 1752 (Franklin Papers)
I. MS not found; printed in Benjamin Franklin, Experiments and Observations on Electricity...
28To 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...
29To 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...
30To 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...