. The Baron von Thulemeyer proposed a commercial treaty to
on 19 Feb., at The Hague (Wharton, ed., Dipl. Corr. Amer. Rev.
expressed interest and promptly consulted with Franklin and Jay at Paris, and with
Congress, to begin preparations for the necessary negotiations. On 9 April, von Thulemeyer
with a 27-article plan, in French, which
promptly sent to Congress (9–10 April, Adams Papers
, copy in
's hand). The United States and Prussia finally concluded their commercial treaty
on 10 Sept. 1785, with von Thulemeyer, Franklin, Jefferson, and
signing it at different dates, in different cities (Miller, ed., Treaties
, p. 162–184).