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United States Congress483,341United States Congress > House287,587United States Congress > Senate180,342NetLibrary, Inc.50,152Geological Survey (U.S.)41,311Library of Congress35,584Library of Congress > Congressional Research Service31,238United States Congress > House > Committee on Invalid Pensions25,266United States Congress > Senate > Committee on Pensions25,072EBSCO Publishing (Firm)22,794United States Congress > House > Committee on the Judiciary22,551United States Congress > House > Committee on Claims19,097United States Congress > Senate > Committee on the Judiciary18,952LibraryPass, Inc.18,895United States Congress > House > Committee on Appropriations17,666United States Department of State16,908United States Congress > Senate > Committee on Claims16,034Adam Matthew Digital (Firm)15,373Thomson Gale (Firm)12,461United States Environmental Protection Agency11,339