1To Benjamin Franklin from Grey Cooper, 13 October 1769 (Franklin Papers)
ALS : American Philosophical Society I Shall come to Town on Monday next, and will [with] great pleasure carry you back with me, if you happen to be disengaged. Yours ever very truly Addressed: To / Dr. Francklin Presumably Sir Grey’s country house, where BF had written his essay on smuggling. See above, XIV , 315.