1To Benjamin Franklin from Giambatista Beccaria, 20 May 1771 (Franklin Papers)
Translation of the Italian text printed in Giambatista Beccaria, Elettricismo artificiale ......
2To Benjamin Franklin from Charles Jackson, 20 May 1771: résumé (Franklin Papers)
AL : University of Pennsylvania Library <General Post Office, May 20, 1771, a note in the third...
3[Diary entry: 20 May 1771] (Washington Papers)
20. Rid to the Brick House to see my Chariot & Horses (which were sent round to my Quarter)...
4[Diary entry: 20 May 1771] (Washington Papers)
20. Wind still Southerly and Warm with great appearances of Rain but none fell here. In the...