
cover art by Kirk Wilson
better image than previously posted

1938 Heinemann hardcover in the UK, published in the US that same year by Viking. this the later Bantam softcover
murder of a stool pigeon by a penny-ante race track gang lead by a malicious teenage boy.
better image than previously posted

pseudonym of Johannes Matthijs Willem Knipscheer
1951 Little Brown hardcover, The Aleutian Blue Mink, this the 1952 Dell reprint with the new title
cover art by James Meese
8th with the husband-and-wife sleuthing team of John and Suzy Marshall