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1. Academy of Natural Sciences of Philadelphia, 19th and
Race Street
Lewis and Clark Herbarium. More than 200 dried, preserved plant
specimens brought back by the explorers.
Alexander Wilson's original sketches of Lewis's woodpecker and
Clark's nutcracker.
Letters pertaining to the botany and zoology of the Expedition
by Charles J. Maynard, Witmer Stone, and Edward Tuckerman.
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