1To Benjamin Franklin from H. Sykes, 20 August 1779 (Franklin Papers)
ALS : American Philosophical Society In Consequence of Your Permission, I take the Liberty to...
2To Benjamin Franklin from H. Sykes, 13 March 1779 (Franklin Papers)
ALS : American Philosophical Society As you Seem’d desirous to know the Particulars Relatif to a...
3To Benjamin Franklin from [H.] Sykes, 26 January 1779 (Franklin Papers)
ALS : Historical Society of Pennsylvania Mr. Sykes presents his Respectfull Compliments to Mr:...
4To Benjamin Franklin from H. Sykes, 24 April 1779 (Franklin Papers)
ALS : American Philosophical Society I should have sent your Spectacles Sooner, but in Complyance...