| Answer | Crossword Clue |
|---|---|
| GPO | Collector of letters: Abbr. |
| IOU | Letters a collector receives? |
| IRS | Spring collector: Abbr. |
| IRS | Tax collector: Abbr. |
| POS | Getters of letters: Abbr. |
| LCS | Letters of credit: Abbr. |
| CORR | Exchanges of letters: Abbr. |
| RABB | Of Hebrew letters: Abbr. |
| ENCS | Accompaniers of cover letters: Abbr. |
| APO | Receiver of private letters?: Abbr. |
| MSS | Contents of some letters to the editor: Abbr. |
| ISR | U.S. ally whose capital has the letters U-S-A in the middle of its name: Abbr. |
| SDAK | Only U.S. state in which the name of the state and its capital share no letters: Abbr. |
