U.S. Government Printing Office

Date: 2017-08-15

The U.S. Government Printing Office was created by the Publication Agency of the U.S. government and it covers various government documents, including the reports, hearings, debates, notes and judicial materials of the government as well as documents issued by the administrative departments (the Department of Defense, the State Council, the White House and so on). Each entry contains a catalogue and there are all together 660,000 entries with the update frequency of once per month.