Discovering Lewis & Clark
Discovering Lewis & Clark: Lewis's Friends and Mentors
Biographical sketches of some of the men that were involved in the expedition of Lewis and Clark.
Curated OER
Smithsonian Libraries: Scientific Identity: Caspar Wistar (1761 1818)
A portrait of Caspar Wistar from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.