The B&W spot illustration above is from “Murder In Season” by C.A.M. Donne, actually Donald Clough Cameron (1905 – 1954), a prolific novelist, pulp scribe and comics writer who penned many Batman and Superman issues and has been credited in whole or in part with coming up with Wayne Manor’s butler, Alfred Pennyworth, and the Batcave. I’ll have to leave it to true Bat-Experts to correct me on that.
The other illustrations (above and below) are from “Sabotage Salvage” by Jerome Severs Perry, which is actually one of Robert Leslie Bellem’s many pen names (as if he wasn’t cranking out enough material for Dan Turner Hollywood Detective tales). It sure seems like forties frills just couldn’t manage to keep the hems of their frocks from flapping open over their stocking tops, at least in Spicy Detective artwork.
The cover for this December 1940 issue was by the great H.J. Ward. But alas, no credits are available for the interior artwork.