ltrs
- P.O. box fillers
- P.O. box filler
- Office corr., sometimes
- Monogram units: Abbr
- Fillers of envs
- Wd. components
- USPS items
- There are 185 in this puzzle: Abbr
- Serious dating, in personal ads
- Predecessors of much email: Abbr
- Post office deliveries that might have "forever" stamps on them: Abbr
- PO Box fillers
- P.O. stack
- P.O. pile
- P.O. box inserts
- P and L, e.g.: Abbr
- Items in mailboxes: Abbr
- Items in a P.O. box
- Harbor ships: Abbr
- Crossword fodder: Abbr
- Corp. communications
- Athletic rewards: Abbr
- Alphabet: Abbr
- Alphabet components: Abbr
- Acronym parts: Abbr
- A, b, etc.: Abbr
- A, B, and C (abbr.)
- A, B and C: Abbr
- A and P, e.g.: Abbr
- P.O. items
- G.P.O. items
- P.O. boxful
- U.S.P.S. cargo: Abbr.
- Mail: Abbr.
- What P.O.'s handle
- Contents of many files: Abbr.
- U.S.P.S. deliveries
- Posts: Abbr.
- Posted pieces: Abbr.
- Contents of some envelopes: Abbr.
- Some paperwork: Abbr.
- Alphabet: Abbr.
- Contents of many files: Abbr
- Env. contents
- USPS delivery
- Monogram pts
- USPS deliveries
- P.O. deliveries
- POB contents
- Env. inserts
- USPS pieces
- Mail: Abbr
- Brief missives?
- A, B and C, briefly
- Posts: Abbr
- PO Box contents
- P.O. sackful