1To Benjamin Franklin from John MacMahon: Prescription and Directions, [23–24 August 1782] (Franklin Papers)
(I) Press copy of ADS : Library of Congress; (II) ALS and press copy of ALS : Library of Congress...
2To Benjamin Franklin from John MacMahon: Prescription and Directions, 14 September 1782 (Franklin Papers)
(I) Press copy of ADS : Library of Congress; (II) ALS and press copy of ALS : Library of Congress...