Dinotopia Digest Novels
11. Chomper (2000)

The Great Television Heroes (with Jim Harmon)
Freakout on Sunset Strip
True Vampires of History (1971)
The Dinosaur Dictionary (1972)
The Great Movie Serials: Their Sound and Fury (1973) (with Jim Harmon)
The Frankenstein Legend: A Tribute to Mary Shelley and Boris Karloff (1973)
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)