1To Benjamin Franklin from the Baron de Wulffen, [before 1 June 1780] (Franklin Papers)
L : American Philosophical Society Jean Henry Baron de Wulffen, natif de Magdeburg, ci-devant...
2To Benjamin Franklin from Wulffen, 6 June 1780 (Franklin Papers)
LS : American Philosophical Society J’ai abandonné patrie, parents, Fortune, tout, pour voler, a...
3To Benjamin Franklin from Wulffen, 10 June 1780 (Franklin Papers)
LS : American Philosophical Society J’ai l’honneur de joindre ici 3. Lettres que je supplie Votre...
4From Benjamin Franklin to Wulffen, 11 June 1780 (Franklin Papers)
AL (draft): American Philosophical Society I shall take care to send your three Letters to...
5To Benjamin Franklin from Wulffen, [c. 25 June 1780] (Franklin Papers)
ALS : American Philosophical Society Bien vivement penétré Des Soins, que Votre exellence, a pris...
6To Benjamin Franklin from the Baron de Wulffen, 7 July 1780 (Franklin Papers)
L : American Philosophical Society I have the Honour to late your Exelance know that am in...