Relief shown by hachures. Profile: Section of the proposed breakwater. Probably detached from a document in the congressional series, doc. 194., Imprint: Washington, D.C. : Army Corps of Engineers, 1834., Scale: 1:1,520,640; Dimensions: 43 x 49 cm, Coordinates: W0865557 W0864857 N0414512 N0413957
Berrien, John Macpherson, -1876, cartographer. (1834). Survey of the mouth of Trail Creek, Indiana. United States. Army. Corps of Engineers. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00024 (map)