1To Benjamin Franklin from Valltravers, 24 December 1782 (Franklin Papers)
ALS : American Philosophical Society Still ignorant of the Fate of mÿ several Letters to Your...
2To Benjamin Franklin from Johann Rodolph Valltravers, 2 October 1782 (Franklin Papers)
ALS : American Philosophical Society None of the five Letters, which I had the Honor to write to...
3To Benjamin Franklin from Johann Rodolph Valltravers, 23 December 1778 (Franklin Papers)
ALS : American Philosophical Society I lose no Time, in transmitting the inclosed Memorial &...
4To Benjamin Franklin from Valltravers, 14 October 1778 (Franklin Papers)
ALS : American Philosophical Society Apprehensive, by Your Excellency’s Silence to my last...
5To Benjamin Franklin from Valltravers, 25 August 1778 (Franklin Papers)
ALS : American Philosophical Society Since no Letter is dispatched from the Post-office at Paris,...
6To Benjamin Franklin from Johann Rodolph Valltravers, 26 July 1778 (Franklin Papers)
ALS : American Philosophical Society Being ignorant of the Fate of my 2. last Letters, of April...
7To Benjamin Franklin from Valltravers, 17 May 1778 (Franklin Papers)
ALS : American Philosophical Society Uncertain, as I am, of the Fate of my Letters to Your...
8To Benjamin Franklin from Valltravers, 14 April 1778 (Franklin Papers)
ALS : American Philosophical Society Rockhall, at Bienne, in Switzerland, Ap. 14th. 1778. Dear...
9To Benjamin Franklin from Johann Rodolph Valltravers, 13 March 1778 (Franklin Papers)
ALS : American Philosophical Society Uncertain of the Fate of my several Letters to Your...
10To Benjamin Franklin from Valltravers, 15 January 1778 (Franklin Papers)
ALS : American Philosophical Society My Letter of the 10th. instant mentioned a Book, which I...