1To Benjamin Franklin from François Willem de Monchy, 9 January 1767 (Franklin Papers)
ALS : American Philosophical Society I have spoken here with a man to make you a model of an Iceboat, but as it must be made in the proportion of an Inche, or perhaps less to a foot it will cost you about 10 Duc., that is between 4 and 5 guineas, and this is the reason why I ask you first if you will give so much for it, if you like it, I’ll take care it shall be made soon, and send it over...
2To Benjamin Franklin from François Willem de Monchy, 15 May 1767 (Franklin Papers)
ALS : American Philosophical Society My Father joins me in compliments and thanks for the trouble you have had in procuring such accurate information concerning the Fire Engine, and also for inquiring about the microscopes which at length I have recieved. Agreeable to your desire I have send you two drawings of an Ice-boat. That without the mast is in the proportion of an Inch to a foot, and...