February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Vols. for 1950-19 contained treaties and international agreements issued by the Secretary of State as United States treaties and other international agreements.

Contains laws, legislative history, administrative regulations, lists of committees, proclamations, executive messages and orders.

Some vols. include supplemental journals of "such proceedings of the sessions, as, during the time they were depending, were ordered to be kept secret, and respecting which the injunction of secrecy was afterwards taken off by the order of the House".