Geological map of the lower Carboniferous area of Southern Indiana (Corydon sheet): to accompany the report on the geology of the region
From the 27th Annual report of the Department of Geology and Natural Resources of Indiana, 1902. Includes three East-West cross-sections: through New Amsterdam, through Corydon, and along line of Southern railway. Scale 1:126,720. 2 miles = 1 in. By George H. Ashley; geology By George H. Ashley and Edward M. Kindle; W.S. Blatchley, state geologist.
Ashley, Geo. H. (George Hall),1866-1951, Kindle, E. M. (Edward Martin),1869-1940., and Blatchley, W. S. (Willis Stanley),1859-1940
Indiana Department of Geology and Natural Resources and William B. Burford