#30 Missouri River Basin Hydrology Study, Legal and Institutional Material, Surface Water Study Group, Undated.
#21 Yellowstone River Basin and Adjacent Coal Area, Montana/North Dakota/Wyoming Level B Study, Land Conservation Measures, Multiple Agencies, May 1977.
#3 Upper Missouri River Basin, Montana Level B Study, Environmental Charcteristics-Technical Report,Missouri River Basin Commission, January 1979.
#2 Yellowstone River Basin Study Area, Surface Coal Mining Impact and Rehabilitation Analysis, No date shown, probably late 1970’s.
#1 Upper Missouri River Basin Level B Study Report and Environmental Impact Statement, Missouri River Basin Commission, March 1981.
#4 Upper Missouri River Basin, Montana Level B Study, Land and Water Conservation Measures-Technical Report, Missouri River Basin Commission, May 1979.