CFR›Title 1›Chapter I›Part 21 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 21—PREPARATION OF DOCUMENTS SUBJECT TO CODIFICATION Subparts A Subpart A—General Sections 21.1–21.6; Subject groups Amendments–References B Subpart B—Citations of Authority Sections 21.40–21.42; Subject groups Form–Placement Authority44 U.S.C. 1506; sec. 6, E.O. 10530, 19 FR 2709; 3 CFR, 1954-1958 Comp., p. 189.Source37 FR 23611, Nov. 4, 1972, unless otherwise noted. Previous 20 Part 20—Handling of the United States Government Manual Statements Next 22 Part 22—Preparation of Notices and Proposed Rules