In Handbook of Indiana Geology, Part 2, Physiography of Indiana, between pages 106-107. Indiana Department of Conservation Publication 21. Detached from: Handbook of Indiana geology, part 2 / by W. N. Logan, E. R. Cumings, C. A. Malott, S. S. Visher, W. M. Tucker, J. R. Reeves. Indianapolis : Wm. B. Burford, contractor for state printing and binding, 1922. Page 796. Imprint: Indianapolis : Dept. of Conservation, Division of Geology, [1922]. Dimensions: 47 x 31 cm