Star Wars
5. The Empire Strikes Back (1980)

Dinotopia Digest Novels
11. Chomper (2000)

The Great Television Heroes (with Jim Harmon)
True Vampires of History (1971)
The Dinosaur Dictionary (1972)
The Frankenstein Legend: A Tribute to Mary Shelley and Boris Karloff (1973)
The Great Movie Serials: Their Sound and Fury (1973) (with Jim Harmon)
The Dracula Book (1975)
Classic Movie Monsters (1978)
Dinosaurs, Mammoths and Cavemen: The Art of Charles R. Knight (1982) (with Sylvia Massey Czerkas)
The Dinosaur Scrapbook (1982)
The Frankenstein Catalog (1984)
The Dinosaur Society's Dinosaur Encyclopedia (1993) (with Don Lessem)
Dinosaurs: The Encyclopedia (1997)
Carbon Dates: A Day by Day Almanac of Paleo Anniversaries and Dino Events (1999)
The Frankenstein Archive (2002)
True Werewolves of History (2004)