Related Clues:
- Bit of romantic memorabilia
- Piece of mail
- Letter after kay
- Letter to a Viking
- Old Germanic character
- Pipe fitter's joint
- Right-angled wing
- It may be set in stone
- Wing that can't flap
- Handwritten rarity, these days
- A kind of add on
- Corner shape
- 90 degree pipe joint
- Connection with a bend
- Kay's follower?