Related Clues:
- Enc. with some bills
- Letter encl. with a manuscript
- What typically arrives with an autograph request
- Postpaid encl
- Ed.'s request, sometimes
- Slush pile item, for short
- Posting aid, briefly
- Postpaid enc
- Coll. fraternity
- Courtesy for an ed
- Postage-paid enc
- Enclosure with an RSVP
- Bill encl
- Common enc
- Business reply encl