Joseph Marie LaBarge was an American steamboat captain, most notably of the steamboats Yellowstone, and Emilie, that saw service on the Mississippi and Missouri rivers, bringing fur traders, miners, goods and supplies up and down these rivers to their destinations. During much of his career LaBarge was in the employ of the American Fur Company, a giant in the fur trading business, before building his own steamboat, the Emilie, to become an independent riverman. During his career he exceeded several existing speed and distance records for steamboats on the Missouri River. Passengers aboard his vessels sometimes included notable people, including Abraham Lincoln. LaBarge routinely offered his steamboat services gratis to Jesuit missionaries throughout his career.

Fort Benton is a city in and the county seat of Chouteau County, Montana, United States. Established in 1846, Fort Benton is the oldest continuously occupied settlement in Montana. Fort Benton was the most upstream navigable port on the Mississippi River System, and is considered "the world’s innermost port".