Shows railroads and public roads. Detached from: A soil survey of Vanderburgh, Gibson, and Pike, and parts of Warrick and Spencer counties / Chas. W. Shannon. In 34th Annual report of the Indiana Department of Geology and Natural Resources. Scale approximately 1:126,720 C.W. Shannon.
Shannon, C. W. (Charles William),1879-1934
Indiana Department of Geology and Natural Resources and William B. Burford