Stuart Palmer
HILDEGARDE WITHERS Series:

1. The Penguin Pool Murder   '31
2. Murder on the Blackboard   '31
3. Murder on Wheels    '32
4. The Puzzle of the Pepper Tree    '33
5. The Puzzle of the Silver Persian   '34
6. The Puzzle of the Red Stallion   '35 (aka The Puzzle of the Briar Pipe)
7. The Puzzle of the Blue Banderilla    '37
8. The Puzzle of the Happy Hooligan    '41
9. The Riddles of Hildegarde Withers    '47
10. Miss Withers Regrets    '47
11. Four Lost Ladies    '49
12. The Monkey Murders    '50
13. The Green Ace    '50  (aka At One Fell Swoop)
14. Nipped in the Bud     '51 (aka Trap for a Redhead)
15. Cold Poison    '54(aka Exit Laughing)
16. People vs. Withers and Malone    '63 (Written w/Craig Rice)
17. Hildegarde Withers Makes the Scene     '69 (Finished by Fletcher Flora)
18. Hildegarde Withers Uncollected Riddles   '02

HOWARD ROOK Series:

1. Unhappy Hooligan    '56
2. Rook Takes Knight    '68

STAND ALONES:
 
Ace of Jades    '31
Omit Flowers    '37  (aka No Flowers by Request)
The Adventure of the Marked Man   '73

Written as Jay Stewart:

Before It's Too Late   '51