| Answer | Crossword Clue |
|---|---|
| QUERY | Letter to a publisher, perhaps |
| MARTHACAREFUL | "Woman" whose letter in "The American Weekly Mercury" lampooned a rival publisher (1729) |
| MAYOCLINIC | 'Health Letter' publisher |
| REGRADE | Change a letter, perhaps |
| ERRAND | Mailing a letter, perhaps |
| DOT | Finish, as a letter, perhaps |
| DEARFRIENDS | Start of a form letter, perhaps |
| OMEGA | Letter on a frat house, perhaps |
| ENCL | Abbr. on a business letter, perhaps |
| PPS | Letters at the end of a letter, perhaps |
| PTO | Letters on the bottom of a letter, perhaps |
| ENC | Abbr. at the end of a letter, perhaps |
