Nonfiction edit

• "The Watery Wonders of Captain Nemo" (Galaxy Science Fiction, December 1961)^[4]

Collaborations with Kate Wilhelm edit

• The Clone (1965, expanded from his 1959 short story of the same name)
• The Year of the Cloud (1970)

Short stories edit

• "The Far Look", in Astounding Science Fiction, August 1956
• "Ceramic Incident", in Astounding Science Fiction, October 1956
• "The Innocents’ Refuge", in Science Fiction Stories, May 1957
• "The Tour", in The Magazine of Fantasy & Science Fiction, 1957
• "Satellite Passage", in If, December 1958 (Also available in The Best of the Best Part One)
• "Day of Succession", in Astounding Science Fiction, August 1959
• "The Clone", in Fantastic, December 1959
• "December 28th", in Playboy, December 1959
• "The Intruder", in Fantasy and Science Fiction, February 1961
• "Test", in Fantasy and Science Fiction, April 1962
• "The Weather Man", in Analog Science Fiction and Fact, June 1962
• "The Lonely Man", in Galaxy, April 1963
• "The Ice Ages", in Fantasy and Science Fiction, April 1965
• "Science Springboard, The: Smog", article in Fantasy and Science Fiction, January 1966
• "The Doctor", in Orbit 2, 1967
• "The Weather on the Sun", in Orbit 8, 1970 (Also available in The Science Fictional Solar System)
• "Early Bird (Cogswell)", in Astounding: John W. Campbell Memorial Anthology, 1973
• "The Splice", in Fantasy and Science Fiction, March 1981

As Cogswell Thomas edit

• "Paradise Regained", in Saving Worlds, 1973 (in collaboration with Theodore Cogswell)

As Leonard Lockhard edit

• "Improbable Profession" (1952), in Astounding, September 1952 (co-written with Charles L. Harness)
• "The Lagging Profession" (1961)
• "The Professional Approach" (1962), in "Analog", September 1962

• Discussion of Thomas and the accuracy of his predictions
• Theodore L. Thomas at the Internet Speculative Fiction Database
• Works by Theodore L. Thomas at Project Gutenberg