Scully, J. Landslides in Pierre Shale in Central South Dakota. 
South Dakota Department of Transportation, Pierre, Final Rept. 
of Project 635(67), Dec. 1973, 707 pp.; Federal Highway Administration. 
Stallard, A.H. and Anschutz, G. Use of the Kelsh Plotter in 
Geoengineering and Allied Investigations in Kansas. HRB, 
Highway Research Record 19, 1963, pp. 53-107. 
Stallard, A. H. and Myers, L. D. Soil Identification by Remote 
Sensing Techniques in Kansas: Part I. State Highway Commission 
of Kansas, 1972, 107 PP; Federal Highway Administration. 
Tanguay, M. G., and Chagnon, J. Y. Thermal Infrared Imagery at 
the St. Jean-Vianney Landslide. Proc., First Canadian Symposium 
on Remote Sensing, Canada Center for Remote Sensing and Canadian 
Institute of Surveying, Ottawa, 1972, pp. 387-402.