Shows dirt roads and improved public roads, railroads, schools, cemeteries, churches, and coal mines. Detached from: Soil survey of Clay, Knox, Sullivan, and Vigo counties, Indiana / Chas. W. Shannon. In 36th Annual report of Department of Geology and Natural Resources, Indiana. Scale approximately 1:63,360 C.W. & M.E. Shannon, 1911.
Shannon, C. W. (Charles William),1879-1934 and Shannon, M. E.
Indiana Department of Geology and Natural Resources and William B. Burford