The Avenger was published by Street & Smith and written by Kenneth Robeson, a house name used by the publisher. Paul Ernsy is largely accredited as the main writer of the series. These covers were created in the 1970s and published by the Warner Paperback Library. They were illustrated by George Gross.
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- Justice Inc.
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- The Yellow Hoard
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- The Sky Walker
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- The Devil’s Horns
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- The Frosted Death
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- The Blood Ring
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- Stockholders in Death
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- The Glass Mountain
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- Tuned for Murder
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- The Smiling Dogs
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- River of Ice
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- The Flame Breathers
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- Murder on Wheels
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- Three Gold Crowns
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- House of Death
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- The Hate Master
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- Nevlo
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- Death in Slow Motion
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- Picturs of Death
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- The Green Killer
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- The Happy Killers
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- The Black Death
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- The Wilder Curse
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- Midnight Murder
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- The Man from Atlantis
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- Red Moon
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- The Purple Zombie
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- Dr. Time
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- The Nightwitch Devil
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- Black Chariots
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- The Cartoon Crimes
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- The Death Machine
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- The Glass Man
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- The Iron Skull
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- Demon Island
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