The Code of federal regulations is the codification of the general and permanent rules published in the Federal register by the executive departments and agencies of the federal government.

Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.

A consolidation of all items of a permanent nature published in the weekly Internal revenue bulletin, ISSN 0020-5761, as well as a cumulative list of announcements relating to decisions of the Tax Court.