United States Department of Agriculture, Natural Resources Conservation Service and Forest Service ; in cooperation with United States Department of the Interior, Bureau of Indian Affairs and Bureau of Land Management, and Montana Agricultural Experiment Station
Northern Plains Branch, Soil and Water Conservation Research Division, Agricultural Research Service, U.S. Department of Agriculture in cooperation with Montana Agricultural Experiment Stations, Northeast Montana Soil and Water Conservation Districts, Soil Conservation Service, Montana Extension Service
United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with United States Department of the Interior, Bureau of Land Management, and Montana Agricultural Experiment Station