ICOT,
Thanks for your words of encouragement. It’s nice to “see” someone intelligent & caring.
I’ve just returned after a break & it’s gratifying to see yet another of your riddles. AFT has already posted many answers hours ago… it seems there’s no mod for the past few hours, so I’ll put in some answers which someone may already have posted in the meantime but mods didn’t put through yet…
3 lettuce
4 A Study in Scarlet
9 gratuity
10 (executive, deputy)
11 Stuka
13 stumping
14 tungsten carbide
15 unctuous
16 Tupolev Tu144
17 toque
20 Stutz
24 Tuxedo Park