1From Benjamin Franklin to Peter Collinson, 23 September 1756 (Franklin Papers)
Duplicate: Pierpont Morgan Library I enclose three Bills, viz. A second for £50 Sterling, drawn...
2From Benjamin Franklin to Peter Collinson, 31 January 1757 (Franklin Papers)
ALS : Pierpont Morgan Library The preceding are Copies of my late Letters; to which I have little...
3From 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,...
4From Benjamin Franklin to Peter Collinson, 19 December 1756 (Franklin Papers)
Duplicate: Pierpont Morgan Library I have now the Pleasure of yours of the 7th and 10th. of...
5From Benjamin Franklin to Peter Collinson, 15 June 1756 (Franklin Papers)
ALS : University of Pennsylvania Library I can now only acknowledge the Receipt of your Favours...
6From Benjamin Franklin to Peter Collinson, 22 November 1756 (Franklin Papers)
Duplicate: Pierpont Morgan Library; also extract: The Royal Society Since mine of the 5th...
7From 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...