Crossword Puzzle Envelope back

Clue: Envelope back

Back-of-the-envelope figs. (ESTS with 4 letters)
Backs of envelopes (FLAPS with 5 letters)
Back of an envelope (FLAP with 4 letters)
Back-of-envelope inscription (SEALEDWITHAKISS with 15 letters)
1830 novel with the same historical backdrop as "Les Miserables" (THEREDANDTHEBLACK with 17 letters)
Backyard belvedere (GAZEBO with 6 letters)
"I take it back" (SORRY with 5 letters)
Backside (e.g. ASS with 3 letters)
It comes back to you (ECHO with 4 letters)
Back off (e.g. ABATE with 5 letters)