Related Clues:

• Bill of lading abbr.
• Missive: Abbr.
• Cigarette pkg.
• Dispatch
• U.P.S. unit
• G.I.'s link with home
• UPS delivery: Abbr.
• Armor of interlinked rings
• Postal delivery
• Correspondence
• Printer tray abbr.
• Env. contents
• Iron clothes?
• Chain letters?
• P.O. boxful