Manuals Manuals contain the basic policy information for the Postal Service.   PSIN Issue Edition Date Title Stock Number Org. USPS Source Public Source ASMISSUE   1/24 Administrative Support Manual 7610-02-000-9881 IS IWEB N/A DMMISSUE   7/24 Mailing Standards of the United States Postal Service, Domestic Mail Manual 7610-03-000-9331 PRI IWEB, PE PE, WWW DMM 100   7/23 A Customer’s Guide to Mailing 7610-05-000-5072 PRI MDCIWB MDC, PE ELMISSUE   3/24 Employee and Labor Relations Manual 7610-02-000-9963 HR IWEB WWW FMMISSUE 4 6/83 Financial Management Manual 7610-02-000-9872 FIN MDC N/A IMMISSUE   9/24 Mailing Standards of the United States Postal Service, International Mail Manual 7610-02-000-9904 PRI IWEB, PE PE, WWW POMISSUE 9 5/24 Postal Operations Manual 7610-03-000-3558 RET IWEB N/A SPPISSUE   4/23 Supplying Principles and Practices N/A SM IWEB WWW