Published in 1863 by the Smithsonian Institution, George Gibbs’s A Dictionary of the Chinook Jargon serves as a foundational linguistic catalog of the widespread pidgin used for commerce and communication between Indigenous tribes and European settlers across the Pacific Northwest. The text systematically standardizes the vocabulary of this highly adaptable contact language, meticulously tracing the etymological roots of its words back to their original Nuu-chah-nulth, lower Chinookan, French, and English sources. A keen insight drawn from the publication is how Gibbs’s rigorous codification of the Jargon was not merely a disinterested scholarly exercise, but a highly utilitarian tool designed to serve the federal government's expansionist agenda. By formalizing a fluid trade pidgin into a standardized, legible dictionary, Gibbs provided federal agents and treaty commissioners with the exact linguistic infrastructure required to efficiently negotiate the sweeping land cessions that systematically dispossessed the region's Indigenous populations