Related Clues:
- Bit of rap sheet shorthand
- Borders order ID
- Literary ID
- Sunscreen meas.
- Police blotter word, often
- Letters denoting an alias
- Wanted poster abbr., perhaps
- Pseudonym lead-in
- Wanted poster letters
- Library catalog ID
- Abbr. on a rap sheet
- Letters for John Smith?
- Block letters?
- Barnes & Noble ID
- Letters before a 62-Down