Related Clues:
- Manuscript enclosure (Abbr.)
- Motor oil abbr.
- SASE, for one
- 125 Across, e.g.
- End-of-letter letters
- Pennzoil letters
- Cable bill encl.
- Oil can abbr.
- Encl. with some contest entries
- Motor mechanics' org.
- MS enclosure
- Abbr. on a cover letter
- Reply facilitator, w/o the stamp
- 25 Across, for one: Abbr.
- Letters on oil cans