My original tumblr post was here.  This illustration is a cover of Thrilling Detective. It contains the text “‘A Red Lacey novel by George Bruce; ‘Murder is a Game,’ a mystery novel by George Bruce; ‘Hell’s Brew at Gumbo Point,’ a weird mystery novelette by Westmoreland Gray; ‘Death Is Inaugurated,’ a Novelette of Espionage by Jean Francis Webb.”  Source: vintagegeekculture.