Letter
Benjamin Franklin to William Heberden, June 7, 1759
Thursday June 7. ’59. Dear Sir I have been so long in determining which to chuse of the two Tourmalines, that I fear you begin to think me unreasonable enough…
Recipient
Thursday June 7. ’59. Dear Sir I have been so long in determining which to chuse of the two Tourmalines, that I fear you begin to think me unreasonable enough…