21From Benjamin Franklin to Jacques Barbeu-Dubourg, [March? 1773]: extract (Franklin Papers)
Translated extract: printed in Jacques Barbeu-Dubourg, ed., Œuvres de M. Franklin … (2 vols.,...
22From Benjamin Franklin to Jacques Barbeu-Dubourg, 28 May–1 June 1773 (Franklin Papers)
ALS (incomplete draft): American Philosophical Society; incomplete translated extract: printed in...