Guidelines/Instructions relating to Inland/Foreign Post: Post Office Guide Part I PO Guide I, Test Set 1PO Guide I, Test Set 2PO Guide I, Test Set 3PO Guide I, Test Set 4 Post Office Guide Part II PO Guide II, Test Set 1PO Guide II, Test Set 2PO Guide II, Test Set 3PO Guide II, Test Set 4 Domestic/Foreing Post Guidelines Test Set 1Test Set 2
