71From 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...
72To 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...
73To 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...
74From 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...
75From 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...
76To 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...
77To Benjamin Franklin from Peter Collinson, 12 April 1748 (Franklin Papers)
ALS : Library Company of Philadelphia I was very fortunate to receive both thy Curious...
78From 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...
79From 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...
80To 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...