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- United States✖[remove]5,198
- United States. Bureau of Land Management328
- United States. Congress. Senate. Committee on Environment and Public Works, author324
- United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs, author266
- United States. Congress. Senate. Committee on Banking, Housing, and Urban Affairs, author251
- United States. Congress. Senate. Committee on Health, Education, Labor, and Pensions, author243
- United States. Congress. Senate. Committee on Energy and Natural Resources, author219
- United States. Congress. Senate. Committee on Commerce, Science, and Transportation, author217
- United States. Congress. Senate. Committee on Foreign Relations, author210
- United States. Congress. Senate. Committee on Finance, author208
- National Science and Technology Center (U.S.)169
- United States. Congress. Senate. Special Committee on Aging, author130
- United States. Congress. Senate. Committee on Indian Affairs (1993- ), author122
- United States. Congress. Senate. Committee on Small Business and Entrepreneurship, author117
- National Applied Resource Sciences Center (U.S.)108
- United States. Congress. Senate. Committee on Veterans' Affairs, author106
- United States. Bureau of Land Management. Montana State Office83
- United States. Congress. Senate. Committee on Armed Services, author83
- United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry, author78
- National Operations Center (U.S.), editor66