21To 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...
22From 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...
23From 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...
24From Benjamin Franklin to Peter Collinson, 1752 (Franklin Papers)
Printed in Benjamin Franklin, Experiments and Observations on Electricity (London, 1769), pp....
25From Benjamin Franklin to Peter Collinson, 1752 (Franklin Papers)
I. MS not found; printed in Benjamin Franklin, Experiments and Observations on Electricity...
26To 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...
27To 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...
28To 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...
29To 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...
30From Benjamin Franklin to Peter Collinson, [October 1752] (Franklin Papers)
Printed in Benjamin Franklin, Supplemental Experiments and Observations on Electricity, Part II ....