Related Clues:
- Business-reply encl.
- Answering aid: Abbr.
- Pennzoil letters
- Cable bill encl.
- Oil can abbr.
- MSS enclosure
- Encl. with an autograph request letter
- Return-mail enc.
- MS attachment
- Encl. with some contest entries
- Ready-to-mail item: Abbr.
- Motor mechanics' org.
- Mailing courtesy, briefly
- MS enclosure
- Reply facilitator, w/o the stamp