Related Clues:
- 10 micronewtons
- Common sign-off
- Hugs and kisses, symbolically
- 'Yours' alternative
- Letter-writer's sign-off
- Letter sign-off
- Unfailingly
- Love letter letters
- 'Yours truly' relative
- Letters in love letters
- Letter writer's sign-off
- Closing to some letters
- Letters at the end of a love letter
- ''Sincerely yours'' alternative
- Love letter closing, and in sequence, a hint to the ends of 18-, 28-, 48- and 64-Across