Incorporation by reference of the publication now titled the Mailing Standards of the United States Postal Service, Domestic Mail Manual was approved by the Director of the Federal Register under 5 U.S.C 552(a) and 1 CFR part 51 on July 31, 2012.
At 80 FR 13492, Mar. 16, 2015, § 11.4 was amended; however, the amendment could not be incorporated due to inaccurate amendatory instruction.