Last Call For Murder!

Ten Detective Aces August 1937

The seller lists this as a Saunders cover, but I am skeptical.

via

The Mystery of The Red Robe

Thrillig Detective November 1939

A Novel Of Murder At The Race Track

Also, The Spiders And The Fly and Masquerade For Crime

via Gregory Urbach

It’s Raining Corpses In Chinatown

Strange Detective Mysteries November-December 1939 thumbnail
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Strange Detective Mysteries November-December 1939
StrangeDetectiveMysteries-1939-11-p038-39
StrangeDetectiveMysteries-1939-11-p058-59
StrangeDetectiveMysteries-1939-11-p074-75

This entire issue can be downloaded here