| Letter carrier's burden | 27 |
| Letter carrier's org. | 25 |
| Letter carrier's tote | 25 |
| Letter carrier's uniform? | 29 |
| Letter carrier"s burden | 28 |
| Letter carrier?: Abbr. | 22 |
| Letter carriers (abbr.) | 23 |
| Letter carriers' gp. | 24 |
| Letter carriers' grp. | 25 |
| Letter carriers' org. | 25 |
| Letter check, often: Abbr. | 26 |
| Letter closer, perhaps | 22 |
| Letter container: Abbr. | 23 |
| Letter covering: Abbr. | 22 |
| Letter directive (abbr.) | 24 |
| Letter distribution on base | 27 |
| Letter drop site (abbr.) | 24 |
| Letter enclosure (abbr.) | 24 |
| Letter enclosures (abbr.) | 25 |
| Letter enclosures: Abbr. | 24 |
| Letter ending for some notes | 28 |
| Letter famed for its size | 25 |
| Letter farthest from alpha | 26 |
| Letter finisher, of sorts | 25 |
| Letter following sigma | 22 |
| Letter for Reeve or Reeves | 26 |
| Letter four after omicron | 25 |
| Letter four before omicron | 26 |
| Letter from a teacher? | 22 |
| Letter from an Adonis? | 22 |
| Letter from Corinthians | 23 |
| Letter from millennia ago | 25 |
| Letter from Paul (abbr.) | 24 |
| Letter from St. Paul: Abbr. | 27 |
| Letter from the Corinthians | 27 |
| Letter from the Guardian? | 25 |
| Letter from the teacher | 23 |
| Letter from the Vatican | 23 |
| Letter in a fraternity name | 27 |
| Letter in El Al's logo | 26 |
| Letter in Hebrew writing | 24 |
| Letter in red and violet | 24 |
| Letter in Socrates' name | 28 |
| Letter in the Daily Mirror | 26 |
| Letter in the Globe and Mail | 28 |
| Letter in the London Times | 26 |
| Letter in the middle: abbr. | 27 |
| Letter insert, briefly | 22 |
| Letter made with two fingers | 28 |
| Letter man's house | 22 |
| Letter of approval?: Abbr. | 26 |
| Letter of regret to a G.I. | 26 |
| Letter on a certain key | 23 |
| Letter on a frat house | 22 |
| Letter on a scholar's key | 29 |
| Letter on a transcript | 22 |
| Letter on fraternity row | 24 |
| Letter on Kal-El's chest | 28 |
| Letter on some Swiss watches | 28 |
| Letter opener's creation | 28 |
| Letter opener, at times | 23 |
| Letter opener, of a sort | 24 |
| Letter opener, sometimes | 24 |
| Letter out for a stroll? | 24 |
| Letter preceding bravo | 22 |
| Letter resembling a trident | 27 |
| Letter sequence in the air | 26 |
| Letter shaped like a P | 22 |
| Letter signoff, for short | 25 |
| Letter starter of yore | 22 |
| Letter taker, for short | 23 |
| Letter that follows epsilon | 27 |
| Letter that follows pi | 22 |
| Letter that sometimes bounces | 29 |
| Letter that's also a name | 29 |
| Letter to Santa contents | 24 |
| Letter to Santa, essentially | 28 |
| Letter two before iota | 22 |
| Letter with a 90-degree bend | 28 |
| Letter with a double curve | 26 |
| Letter with a double twist | 26 |
| Letter with a right angle | 25 |
| Letter with jay or tee | 22 |
| Letter writer's 52? | 23 |
| Letter writer's aid | 23 |
| Letter writer's sign-off | 28 |
| Letter writer's signoff | 27 |
| Letter writer, formally | 23 |
| Letter writing, it's said | 29 |
| Letter writing, some say | 24 |
| Letter's antecedent | 23 |
| Letter's first word | 23 |
| Letter's must-have | 22 |
| Letter's rest period? | 25 |
| Letter-box inscription | 22 |
| Letter-drop site: abbr. | 23 |
| Letter-exchanging friends | 25 |
| Letter-extending abbr. | 22 |
| Letter-getter, for short | 24 |
| Letter-getting opportunities | 28 |