Related Clues:
- Epistolary courtesy: Abbr.
- Prescription number
- Contest entry enclosure: abbr.
- Freelancer's encl. (m)
- It may accompany a MS
- Enc. for a response
- Freelancer's courtesy: abbr.
- Postpaid enclosure: Abbr.
- Narcotic or sedative
- Morphine. e.g.
- Letter-bottom letters
- A MS. might come back in it
- Dentist's number?
- Chilling order?
- It's used to return mail: abbr.