1934 Loring and Mussey hardcover 1934 “First Edition. Author’s only mystery, one which tells the tale of gangland violence in the American west. The author was a Denver detective.“ [updated 12/27/25]
1930 Grosset and Dunlap reissue – cover art by Mach Tey 1930 Grosset and Dunlap cover art by Mach Tey
July 1939 issue ~ cover art by J.W. Scott July 1939 cover art by J.W. Scott better image than previously posted [images updated 4/30/25]