Related Clues:

• Letter holder: Abbr.
• Card holder: Abbr.
• Check holder: Abbr.
• Invoice encl.
• #10, e.g.: Abbr.
• Stationer's item: Abbr.
• Posted item: Abbr.
• Pt. of SASE
• Pay holder: Abbr.
• Stationery item, briefly
• Part of S.A.S.E.: Abbr.
• Oscars prop: Abbr.
• Letter carrier: Abbr.
• 114 Down holder
• Stationer's piece: abbr.