1Report of the Purfleet Committee to the Royal Society, 21 August 1772 (Franklin Papers)
Printed in the Royal Society, Philosophical Transactions …, LXIII (1773–74), 42–7; AD (draft):...
2To Benjamin Franklin from Arthur Lee, 21 August 1772 (Franklin Papers)
AL : Historical Society of Pennsylvania Mr. Lee’s Compliments to Dr. Franklin. The Gentleman who...
3To Benjamin Franklin from William Strahan, 21 August 1772 (Franklin Papers)
ALS : American Philosophical Society As you will probably write to Philadelphia by some of the...
4[Diary entry: 21 August 1772] (Washington Papers)
21. Dined at Arrells again & returnd home after Dinr.
5[Diary entry: 21 August 1772] (Washington Papers)
21. Clear and pleasant again with but little Wind.