41 C.F.R. § 102-192.40 Where can I get more information about the classes of mail?
Title 41 - Public Contracts and Property Management
Details about mail classes can be found in the Domestic Mail Manual (DMM). The DMM is available from New Orders, Superintendent of Documents, U.S. Government Printing Office, P.O. Box 371954, Pittsburgh, PA 15250–7954, http://pe.usps.gov/.
Title 41: Public Contracts and Property Management
PART 102–192—MAIL MANAGEMENT
Subpart A—General Provisions
§ 102-192.40 Where can I get more information about the classes of mail?
