Keywords: Keelboat-Clark-sidevw.jpg Keelboat as used on Ohio and Missouri rivers in the 19th century scetch from the field notes of William Clark on 1804-01-21 http //www lewis-clark org/content/content-article asp ArticleID 496 1804 en William Clark PD-old-100 Fur trade United States in the 1800s Wild West in art Keelboats William Clark explorer |