Missoula lecture highlights Lewis and Clark’s scientific finds and the fate of their collections

A presenter in Missoula outlined the scientific contributions of the Lewis and Clark expedition and traced what happened to the specimens, notes and maps the party collected.

The presenter said the expedition produced substantial natural-history material beyond its cartographic achievements: dozens of plant and animal descriptions, ethnographic records of many Indigenous groups, and nearly 100 maps of the route. He noted that much of the material was dispersed to private collectors and museums and that some significant botanical and zoological specimens were lost or published outside the United States.

Why it matters: the speaker argued the expedition’s scientific records shaped 19th‑century natural history, informed later naming and classification of species, and fueled commercial and scientific activity across the trans‑Mississippi West.

Most important findings, as summarized by the presenter, included roughly 25 new bird species, descriptions that allowed later scientists to identify at least 34 bird species from the journals, and more than 200…