Marvel Mystery Comics comic books issue 23

Cover art by Alex Schomburg. Sub-Mariner Comics 2 ad. "Highway of Mystery" starring The Human Torch, story and art by Carl Burgos; N-4, a Nazi saboteur, has infiltrated the Topper Tank factory as an executive secretary; She has her men build a hideout above a superhighway so that she can drop a ramp to capture experimental models of a new tank during transit. She is finally unmasked by the Torch and Toro. "The Case of the Vanishing Convicts!", script and art by Bill Everett; Namor has to overcome a mad scientist who is trying to create a race of evil Sub-Mariners to war against America! Patriot untitled story, script by Ray Gill, art by Art Gates; The Patriot puts an end to the murderous activity of a self-confessed Bundsman, who wanted to end a play that was anti-Nazi. "The Vision Speaks" text story, script by Stan Lee. The Vision untitled story, script by Jack Kirby and Joe Simon, pencils by Kirby, inks by Simon; The Vision comes to Earth to investigate the sacrificing of humans to the mysterious Kai-Mak, the Shark-God. Ka-Zar the Great untitled story, art by Ben Thompson; Ka-Zar ends his battle with the Nazis, who are attempting to establish an air base in the African jungle. "The Mystery of the Green Diamond" starring Terry Vance, script by Ray Gill, art by Bob Oksner; Terry and Deadline are invited to a swanky party thrown by the mayor, then must investigate the disappearance of the green diamond necklace worn by the mayor's wife. Angel untitled story, art by Paul Gustavson; The Angel is at Inferno Isle and discovers that the Temple of Fire located there is masking a secret Nazi base. Human Torch Comics ad. 68 pages. Cover price $0.10.