Bantam Books KENNETH ROBESON Doc Savage: The Secret in the Sky #20 and Doc Savage: Cold Death #21 (nd; split artwork cover)
Bantam Books 13421-3 KENNETH ROBESON Doc Savage: Satan Black #97 and Doc Savage: Cargo Unknown #98 (nd; split artwork cover)
Bantam Books KENNETH ROBESON Doc Savage: Hell Below #99 and Doc Savage: The Lost Giant #100 (nd; split artwork cover)
This volume is listed as "A Double Doc Volume - Two Exciting Adventures."
Bantam Books KENNETH ROBESON Doc Savage: The Whisker of Hercules #103 and Doc Savage: The Man Who Was Scared #104 (1981; split artwork cover)
This volume is listed as "Double Doc Action in One Thrill-Packed Volume!"
Bantam Books KENNETH ROBESON Doc Savage: The Shape of Terror #109 and Doc Savage: Death Had Yelloweyes #110 (nd; split artwork cover)
Bantam Books KENNETH ROBESON Doc Savage: One-Eyed Mystic #111 and Doc Savage: The Man Who Fell Up #112 (nd; split artwork cover)
Bantam Books KENNETH ROBESON Doc Savage: The Talking Devil #113 and Doc Savage: The Ten Ton Snakes #114 (nd; split artwork cover)
This volume is listed as "Double Doc Dynamite! Two Complete Adventures in One Exciting Volume"
Bantam Books KENNETH ROBESON Doc Savage: Pirate Isle #115 and Doc Savage: The Speaking Stone #116 (nd; split artwork cover)
This volume is listed as "Two Complete Doc Adventures in One Exciting Volume!"
Bantam Books KENNETH ROBESON Doc Savage:Devils of the Deep #123 and Doc Savage: The Headless Men #124 (1984; split artwork cover)
