Author/Creator
- United States330
- Library of Congress. Congressional Research Service260
- Geological Survey (U.S.)250
- United States. Congress. House221
- Geological Survey (U.S.), issuing body104
- United States. Geological Survey104
- United States. Congress. Senate. Committee on Energy and Natural Resources81
- United States. Federal Power Commission72
- United States. General Accounting Office49
- United States. Bureau of Land Management45
- United States. Energy Information Administration. Office of Oil and Gas44
- Datamonitor (Firm)43
- United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Energy and Power40
- United States. Congress. House. Committee on Interstate and Foreign Commerce. (1892- 1981)37
- Middleton, Jefferson35
- Coons, Altha Titsworth33
- National Assessment of Oil and Gas Project (U.S.)31
- United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Energy Regulation and Conservation31
- United States. Department of the Interior31
- United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Oversight and Investigations28