Clue: Letter drop site (abbr.)

Answer: USPO

Length: 4

---

Similar Clues:

• Letter-drop site: abbr. (USPO with 4 letters)
• Deposit site: abbr. (ACCT with 4 letters)
• Defense site: Abbr. (AFB with 3 letters)
• Mobile phone site?: Abbr. (ALA with 3 letters)
• Letter jumble (Abbr.) (ANAG with 4 letters)
• GI's letter drop (APO with 3 letters)
• Abbr. on a letter to a soldier (APO with 3 letters)
• Service mail drop: Abbr. (APO with 3 letters)
• Receiver of private letters?: Abbr. (APO with 3 letters)
• Mil. drop site (APO with 3 letters)