1To Benjamin Franklin from Rodolphe Valltravers, 25 April 1777 (Franklin Papers)
AL : American Philosophical Society Our predecessors’ introduction of Valltravers, at the time...
2To Benjamin Franklin from Rodolphe Valltravers, 2 July 1777 (Franklin Papers)
ALS : American Philosophical Society Rodh. Valltravers has called, to pay his Respects to the...
3To Benjamin Franklin from Valltravers, 8 July 1777 (Franklin Papers)
AL : American Philosophical Society Rodh. Valltravers presents his best Respects to Messieurs...
4To Benjamin Franklin from Valltravers, 21 September 1777 (Franklin Papers)
ALS : American Philosophical Society The Republicks of Switzerland have been treated with the...
5To Benjamin Franklin from Johann Rodolph Valltravers, 10 November 1777 (Franklin Papers)
ALS : American Philosophical Society Just returned from a Tour thro’ the principal of our...
6To Benjamin Franklin from Valltravers, 4 December 1777 (Franklin Papers)
ALS : American Philosophical Society These Lines will be conveyed to you by the Elector...
7To Benjamin Franklin from Valltravers, 10 January 1778 (Franklin Papers)
ALS : American Philosophical Society I am not surprized, if my Letters, of Septr. 21t. and 26th....
8To Benjamin Franklin from Valltravers, 15 January 1778 (Franklin Papers)
ALS : American Philosophical Society My Letter of the 10th. instant mentioned a Book, which I...
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, 14 April 1778 (Franklin Papers)
ALS : American Philosophical Society Rockhall, at Bienne, in Switzerland, Ap. 14th. 1778. Dear...