From F. and Anton Georg Eckhardt frères
	ALS: American Philosophical Society
	<The Hague, November 25, 1777, in French: One of us was
	known to you in London, and had the honor of your esteem.
	Our friend and correspondent M. Penet will give you the prospectus
	of a work describing an instrument that we have invented;
	we should be immensely flattered if you would allow
	your name to be included among our subscribers in France.
	We include a memorandum about a capstan of our design.
	You will doubtless remember its debut in England, when the
	Navy Board had it placed on a ship and it performed most
	successfully; the ship has not yet put to sea, however, and the
	capstan has not come into use. M. Penet will show you the
	products of a manufactory that we have established, which
	works with speed and precision and turns out better goods at
	more moderate prices than any factory of its kind in Europe.>