1To George Washington from Rodolph Valltravers, 20 March 1791 (Washington Papers)
Having received, by my worthy Friend, Captn Bell, of the Union, the inclosed Letter from Mr Jn Churchman, with his Variation-Map & Book, dedicated to Your Excellency; I did not hesitate, both from the Importance of his Pursuit, and the Respectability of its Patronage, complying with his Request, and promoting his Views by every Means in my Power. May I be permitted, Sir, to lay before Your...
2To George Washington from Rodolph Valltravers, 3 July 1791 [letter not found] (Washington Papers)
Letter not found: from Rodolph Valltravers, 3 July 1791. In a letter to GW of 30 Nov., Valltravers referred to his letter of “July 3d; from Rotterdam; by Captn Trevett of Marblehead; charged with literary Communications to the learned Societies at Philadelphia, Boston” ( DNA : RG 59, Miscellaneous Letters). See also Valltravers to GW, 21 July, n.4 .
3To George Washington from Rodolph Valltravers, 21 July 1791 (Washington Papers)
Copy. No. 1 ⟨ illegible ⟩ May it please Yr Excellcy! Sir! Roterdam, July 21. 91. Humbly flattering myself with your safe & kind Reception of my Letter & Packet dated from Hamburg, the 15th of March, & conveyed by Captn Bell of Philadelphia, with Maps, & several Memoirs (No. 2.) collected for the Use of yr assiduous Surveyor & Geometer, John Churchman of Philadelphia; and, under Yr Excce’s...
4To George Washington from Rodolph Valltravers, 17 August 1791 [letter not found] (Washington Papers)
Letter not found: from Rodolph Valltravers, 17 Aug. 1791. Valltravers described to GW on 30 Nov. his letter to GW of “Augt 17” from Rotterdam “by Captn Wm Callahan.” Valltravers noted that Callahan’s vessel, the Pringle, was “bound for Charlestown; charged with a Packet for my old Friend, H. Laurence, Esqre containing Proposals for the Congress, & for several patriotic Societies established at...
5To George Washington from Rodolph Valltravers, 19 November 1791 [letter not found] (Washington Papers)
Letter not found: from Rodolph Valltravers, 19 Nov. 1791. On 6 June 1792, in listing his previous correspondence with GW, Valltravers mentioned to GW “A further Letter to your Excellency, dated Novr 19th 1791.” Rodolph Valltravers might have been referring to his letter to GW of 30 Nov. 1791 (see Valltravers to GW, 21 July 1791, n.5 ).
6To George Washington from Rodolph Valltravers, 6 June 1792 (Washington Papers)
The Packet, with instructive Materials, collected from the Academies of Berlin, Leipzig, Petersburg and Hamburg, in Aid of Mr John Churchman’s, your ingenious Countryman’s, Labors, towards an experimental very interesting Theory of magnetical Motions and their Variations, transmitted to Your Excellency, by Captn Bell, from Hamburg, in March 1791. having been kindly received & forwarded to that...