1To Benjamin Franklin from Peter and Michael Collinson, 14 July 1767 (Franklin Papers)
AL : Historical Society of Pennsylvania P Collinson and Son’s Respects to their Good Friend Benn: Franklin Request the favour to Enjoye His company at Mill-Hill any Day this Week that it Suites Him: to Make his Stay more Agreeable—I have by this Post requested the like favour, of Doct. Solander. I hope you Two Gentlemen will Concert Measures, to Come together, but if that can’t conveniently...