Result of Survey and Examination of Peninsular Florida with a View to the Construction of a Ship Canal from St. Mary’s River to the Gulf of Mexico

A proposed waterway across northern Florida is the organizing idea of this survey map. Its rivers and possible canal routes turn a familiar outline into a problem of engineering and transportation. The sheet belongs in the collection because it records an investigated possibility, not merely a finished feature: an excellent reminder that historical maps can preserve futures people considered but did not necessarily build.