Discovering Lewis & Clark
Discovering Lewis & Clark: Measuring the Falls
This entry from William Clark's journals outlines the importance of the falls of the Missouri in the expedition of Lewis and Clark.
Curated OER
Smithsonian Libraries: Scientific Identity: John Evans (1680 1730)
A portrait of John Evans from the Dibner Library of the History of Science and Technology, made available through the Smithsonian Institution's Scientific Identity Collection.