1To Benjamin Franklin from Ernst Frederik von Walterstorff, 13 April 1783 (Franklin Papers)
AL : American Philosophical Society Mr. de Walterstorff is very sorry he cannot have the honour...
2To Benjamin Franklin from Walterstorff, 14 May 1783 (Franklin Papers)
AL : American Philosophical Society Mr de Walterstorff presents his respectfull compliments to...
3To Benjamin Franklin from Ernst Frederik von Walterstorff, 20 May 1783 (Franklin Papers)
AL : American Philosophical Society M. de Walterstorff presents his respectfull compliments to...
4To Benjamin Franklin from Walterstorff, 26 July 1783 (Franklin Papers)
ALS : American Philosophical Society According to Your desire I have the honour of sending You an...