Related Clues:
- Letters in a letter
- SASE, e.g.
- Dict. shelfmate
- Something in an env.
- Brit. reference work
- Abbr. on a business letter
- Brit word bk.
- Ltr. insert
- Stamped return env., e.g.
- 'The Professor and the Madman' topic, for short
- Lexicon with many citations: Abbr.
- Env. abbreviation
- Twenty-vol. reference
- Voluminous ref. work
- 'The Professor and the Madman' subj.