- The Historical Bigfoot
- Cryptozoology: Science & Speculation
- Invertebrata Enigmatica: Giant Spiders, Dangerous Insects, and Other Strange Invertebrates in Classic Science Fiction and Fantasy
- Cetus Insolitus: Sea Serpents, Giant Cephalopods, and Other Marine Monsters in Classic Science Fiction and Fantasy
- Sauria Monstra: Dinosaurs, Pterosaurs, and Other Fossil Saurians in Classic Science Fiction and Fantasy