1. Physiography and Quaternary geology of the San Juan Mountains, Colorado;Atwood;U. S. Geol. Survey Prof. Paper 166,1932
2. Surficial horizonta displacements on Slumgullion landslide, Hinsdale County, Colorado 1985 to 1990 (determined by direct visual comparison);Chiarle;U.S. Geol. Survey Open File Rep 94-233,1994
3. Slumgullior earthflow and earth slide near Lake City, Colorado (abst.);Crandell;Geol. Soc. America Bull.,1960
4. Movement of the Slumgullion earthflow near Lake City, Colorado;Crandell,1961
5. Report of F.M. Endlich;Endlich,1876