The United States Congressional Serial Set is a bound compilation of House and Senate Documents and House and Senate Reports. Publication began with the 15th Congress/1st session (1817) and is still being published today. Documents of the first fourteen Congresses (1789-1816) were published in the American State Papers. The serial number is a unique number applied to each book in the series running consecutively from the 15th Congress. Information on the publication and history of the Serial Set is available from the Government Publishing Office.