Viết dưới cái tên Warren Smith:
- Finder's Keepers. Belmont, 1965
- Strange Women of the Occult. Popular Library, 1968
- Strange & Miraculous Cures. Ace Star Books, 1968
- Strange Powers of the Mind. Ace Star Books, 1968
- Strange ESP. Popular Library, 1969
- Into the Strange. Popular Library, 1969
- Abominable Snowmen. Award, 1969.
- Strange Murderers & Madmen. Popular Library, 1969
- Strange Abominable Snowmen. Popular Library, 1970.
- Strange Hexes. Popular Library, 1970.
- Talking to the Spirits: 10 World Famous Psychic Reveal Their Occult Secrets. Pinnacle, 1971
- Chains of Fear Delton Press, 1972
- The Strange Ones. Popular Library, 1972
- Triangle of the Lost. Zebra, 1975
- Myth and Mystery of Atlantis. Zebra, 1975
- Secret Forces of the Pyramids. Zebra, 1976
- The Hidden Secrets of the Hollow Earth. Zebra, 1976
- Lost Cities of the Ancients—Unearthed! Zebra, 1976
- Secrets of the Loch Ness Monster Zebra, 1976
- UFO Trek. Sphere, 1977
- Ancient Mysteries of the Mexican and Mayan Pyramids. Zebra, 1977
- The Book of Encounters. Zebra, 1977
- The Secret Origins of Bigfoot. Zebra, 1977
- This Hollow Earth, Sphere, 1977 (Tái bản năm 1972 Lancer Edition)
Viết dưới bút danh Eric Norman:
- The Under People. Lancer Books, 1969. cũng là phiên bản tiếng Nhật năm 1997.
- Buried Treasure Guide. Award, 1970
- Gods, Demons & UFOs. Lancer Books, 1970.
- Gods, Demons and Space Chariots. Lancer, 1971
- Bitter Harvest. Delton Press, 1971
- The Strange Ones. Popular Library, 1972
- Predictions for 1973. Award, 1972.
- Predictions for 1974. Award, 1973
- Beyond the Strange. Popular Library, 1972
- This Hollow Earth. Lancer, 1972. Also Japanese edition.
- Gods and Devils from Outer Space. Lancer, 1973
Warren Smith với Brad Steiger/Eugene Olson:
- The Menace of Pep Pills. Merit Books, 1965
- Treasure Hunting. Ace Books, 1965
- What the Seers Predict for 1971. Lancer Books, 1970
- Satan's Assassins. Lancer, 1971
- Predictions for 1972. Lancer, 1971
Warren Smith với đồng tác giả Gabrial Green:
- Let's Face Facts About Flying Saucers. Popular Library, 1967
Viết dưới bút danh Paul Warren:
- The Sensual Male. Pinnacle, 1971
Viết dưới bút danh Robert E. Smith:
- Doc Anderson: We Live Many Lives. Paperback Library, 1971. P.
- Doc Anderson: The Healing Faith. Lancer, 1972. P.
- Doc Anderson: The Man Who Sees Tomorrow. Paperback Library, 1970
Viết dưới bút danh Barbara O'Brien:
- Martinis, Manhattans or ME? Zebra, 1974
Viết dưới bút danh Barbara Brooks:
- High Society. Pinnacle, 1974
Viết dưới bút danh Johnny Shearer:
- Sodom, U.S.A. Brandon House, 1965
- The Male Hustler. Brandon House, 1965
Viết dưới bút danh Joanna Warren (Tiểu thuyết)
- The Conrad Chronicles: Belle Mead. Zebra, 1978
- The Conrad Chronicles #2: The Dreamers. Zebra, 1980
- The Conrad Chronicles #3: The Destined. Zebra, 1980.
Viết dưới bút danh David Norman (Tiểu thuyết):
- The Frontier Rakers. Zebra, 1979
- The Frontier Rakers #2: The Forty Niners. Zebra, 1979
- Frontier Rakers #3: Gold Fever. Zebra, 1980
- Frontier Rakers #4: Silver City. Zebra, 1980
- Frontier Rakers: Montana Pass. Zebra, 1982
- Frontier Rakers: Santa Fe Dream. Zebra, 1983
Viết dưới bút danh Norma Warren (Tiểu thuyết):
Viết dưới bút danh Jake Logan (Tiểu thuyết):
- High, Wide, and Deadly. Berkley Western, 1987
- Gold Fever, Berkley Western, 1989
Warren Smith với Harry Petheram:
- Guide to the Timex 1,000 and 2,000 computer. William C. Brown Company, Publishers, 1983