1To Benjamin Franklin from Robert Hare, 28 October 1773 (Franklin Papers)
ALS : American Philosophical Society I beg you to accept my warmest thanks for the fervor of the...
2To John Adams from Robert Hare, 28 December 1798 (Adams Papers)
The Senate of Pennsylvania, sensible of your many arduous and important duties, would neither...
3To Thomas Jefferson from Robert Hare, 23 March 1824 (Jefferson Papers)
I received a few days ago your letter requesting a list of such apparatus as I might conceive...
4To Thomas Jefferson from Robert Hare, 31 March 1824 (Jefferson Papers)
Pursuant to your request in your letter of Inst, & my reply to it, I now furnish you with a list...