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."

The House Rules and Manual contains the fundamental source material for parliamentary procedure used in the House of Representatives: the Constitution of the United States; applicable provisions of Jefferson's Manual; Rules of the House (as of the date of this preface); provisions of law and resolutions having the force of Rules of the House; and pertinent decisions of the Speakers and other presiding officers of the House and Committee of the Whole interpreting the rules and other procedural authority used in the House of Representatives. The rules for the One Hundred Fifteenth Congress were adopted on January 3, 2017, when the House agreed to House Resolution 5. In addition to a series of changes to various standing rules, House Resolution 5 included separate free-standing orders constituting procedures to be followed in the One Hundred Fifteenth Congress. Explanations of the changes to the standing rules appear in the annotations following each rule in the text of this Manual.