| Series | | Books |
| Ron Goulart |
| |
| Cleopatra Jones | | (1973) |
| | | (1975) |
| |
| Other | | The Sword Swallower [Ben Jolsen] (1968) |
| | | The Fire-Eater [Barnum System] (1970) |
| | | After Things Fell Apart [Fragmented America] (1970) |
| | | Clockwork's Pirates (1971) |
| | | Death Cell [Jack Summer] (1971) |
| | | Gadget Man [Fragmented America] (1971) |
| | | Ghost Breaker (1971) |
| | | Clockwork Pirates [Barnum System] (1971) |
| | | Shaggy Planet [Barnum System] (1972) |
| | | Hawkshaw [Fragmented America] (1972) |
| | | Wildsmith (1972) |
| | | Plunder [Jack Summer] (1972) |
| | | The Tin Angel (1973) |
| | | A Talent for the Invisible [Jack Conger] (1973) |
| | | Spacehawk, Inc. [Barnum System] (1974) |
| | | Flux [Ben Jolsen (1974) |
| | | On Alien Wings [Vampirella] (1975) |
| | | The Hellhound Project (1975) |
| | | Bloodstalk [Vampirella] (1975) |
| | | When the Waker Sleeps (1975) |
| | | Deathgame [Vampirella] (1976) |
| | | Quest of the Gypsy [Gypsy] (1976) |
| | | Vampirella [Vampirella] (1976) |
| | | Snakegod [Vampirella] (1976) |
| | | Blood Wedding [Vampirella] (1976) |
| | | Deadwalk [Vampirella] (1976) |
| | | A Whiff of Madness [Jack Summer] (1976) |
| | | The Enormous Hourglass (1976) |
| | | The Emperor of the Last Days (1977) |
| | | Nemo (1977) |
| | | Challengers of the Unknown (1977) |
| | | The Island of Dr Moreau (writing as Joseph Silva) (1977) |
| | | Eye of the Vulture [Gypsy] (1977) |
| | | Crackpot [Fragmented America] (1977) |
| | | The Panchronicon Plot [Jack Conger] (1977) |
| | | The Wicked Cyborg [Barnum System] (1978) |
| | | Capricorn One (1978) |
| | | Calling Dr. Patchwork (1978) |
| | | Hello, Lemuria, Hello [Jack Conger] (1979) |
| | | Dr. Scofflaw [Barnum System] (1979) |
| | | Star Hawks [Star Hawks] (1979) |
| | | Cowboy Heaven (1979) |
| | | Holocaust for Hire (writing as Joseph Silva) (1979) |
| | | Ghosting (1980) |
| | | Skyrocket Steele (1980) |
| | | Empire 99 [Star Hawks] (1980) |
| | | Hail Hibbler [Odd Jobs, Inc.] (1980) |
| | | The Tremendous Adventures of Bernie Wine (1981) |
| | | Upside Downside (1981) |
| | | The Robot in the Closet (1981) |
| | | Brinkman [Fragmented America] (1981) |
| | | The Cyborg King [Star Hawks] (1981) |
| | | The Great British Detective (1982) |
| | | Big Bang [Odd Jobs, Inc.] (1982) |
| | | Hellquad (1984) |
| | | The Prisoner of Blackwood Castle [Harry Challenge] (1984) |
| | | A Graveyard of My Own (1985) |
| | | Brainz, Inc. [Odd Jobs, Inc.] (1985) |
| | | Suicide, Inc. (1985) |
| | | Galaxy Jane [Jack Summer] (1986) |
| | | Starpirate's Brain [Exchameleon] (1987) |
| | | Daredevils, Ltd [Exchameleon] (1987) |
| | | The Curse of the Obelisk [Harry Challenge] (1987) |
| | | Everybody Comes to Cosmo's [Exchameleon] (1988) |
| | | The Wisemann Originals [Navarro and Briggs] (1989) |
| | | The Tijuana Bible (1989) |
| | | Even the Butler Was Poor (1990) |
| | | Now He Thinks He's Dead (1992) |
| | | Murder on the Aisle (1996) |
| | | Groucho Marx, Master Detective [Groucho Marx] (1998) |
| | | Groucho Marx, Private Eye [Groucho Marx] (1999) |
| | | Elementary, My Dear Groucho [Groucho Marx] (1999) |
| | | Groucho Marx and the Broadway Murders [Groucho Marx] (2001) |
| | | Groucho Marx, Secret Agent [Groucho Marx] (2002) |
| | | Groucho Marx, King of the Jungle [Groucho Marx] (2005) |
| | | The Same Lie Twice [John Easy] (2012) |
| | | If Dying Was All [John Easy] (2012) |
| | | Too Sweet to Die [John Easy] (2012) |
| | | One Grave Too Many [John Easy] (2012) |
| | | TekWarWilliam Shatner) (1989) [TekWar] (with) |
| |
| Kenneth Robeson |
| |
| Other | | The Man from Atlantis [Avenger] (1974) |
| | | The Cartoon Crimes [Avenger] (1974) |
| | | Black Chariots [Avenger] (1974) |
| | | The Nightwitch Devil [Avenger] (1974) |
| | | Dr. Time [Avenger] (1974) |
| | | The Purple Zombie [Avenger] (1974) |
| | | Red Moon [Avenger] (1974) |
| | | The Death Machine [Avenger] (1975) |
| | | The Blood Countess [Avenger] (1975) |
| | | The Glass Man [Avenger] (1975) |
| | | The Iron Skull [Avenger] (1975) |
| | | Demon Island [Avenger] (1975) |
| |
| Frank S. Shawn |
| |
| Other | | The Golden Circle [Phantom] (1973) |
| | | The Hydra Monster [Phantom] (1973) |
| | | The Mystery of the Sea Horse [Phantom] (1973) |
| | | The Veiled Lady [Phantom] (1973) |
| | | The Swamp Rats [Phantom] (1974) |
| | | The Goggle-Eyed Pirates [Phantom] (1974) |
| |
| Con Steffanson |
| |
| Other | | The Space Circus [Flash Gordon] (1969) |
| | | The Lion Men of Mongo [Flash Gordon] (1974) |
| | | The Plague of Sound [Flash Gordon] (1974) |
| | | The Time Trap of Ming XIII [Flash Gordon] (1977) |
| |