1To Thomas Jefferson from Charles Willson Peale, 6 February 1797 (Jefferson Papers)
Last June I received a Letter from you, respecting an exchange of the Subjects of Natural History, that the Hereditary Prince of Parma was desireous of making. I answered your Letter in the same month (which I hope was received) and although I have had other avocations, such as Bridge building &c., yet I have made a beginning in this work and I have preserved such subjects as have occasionly...