1To Thomas Jefferson from Joseph B. McKean, 11 April 1805 (Jefferson Papers)
Mr; Clement Penrose has, I understand, been recommended to your Excellency as a fit person to be...
2To James Madison from Joseph B. McKean, 11 July 1806 (Abstract) (Madison Papers)
§ From Joseph B. McKean. 11 July 1806, Philadelphia. “I am requested to state my knowledge of Mr;...