- The big bug book, by Margery Facklam ; illustrated in actual size by Paul Facklam
- Lizards, weird and wonderful, by Margery Facklam ; illustrated by Alan Male
- Wild animals, gentle women, Margery Facklam ; illustrated with line drawings by Paul Facklam and with photos
- Bugs for lunch, Margery Facklam ; illustrated by Sylvia Long
- Creepy, crawly caterpillars, by Margery Facklam ; illustrated by Paul Facklam
- Bees dance and whales sing, the mysteries of animal communication, by Margery Facklam ; illustrations by Pamela Johnson
- Bugs for lunch, Insectos para el amuerzo, Margery Facklam ; illustrated by Sylvia Long ; [translation by Liliana Valenzuela]
- Spiders and their web sites, by Margery Facklam ; illustrated by Alan Male
- The big bug book, by Margery Facklam
- Who harnessed the horse?, the story of animal domestication, by Margery Facklam ; illustrated by Steven Parton
- New York, the Empire State, Margery Facklam and Peggy Thomas ; illustrated by Jon Messer
- What does the crow know?, the mysteries of animal intelligence, by Margery Facklam ; illustrations by Pamela Johnson
- Do not disturb, the mysteries of animal hibernation and sleep, by Margery Facklam ; illustrations by Pamela Johnson
- Tracking dinosaurs in the Gobi, Margery Facklam
- And then there was one, the mysteries of extinction, by Margery Facklam ; illustrations by Pamela Johnson
- Only a star, written by Margery Facklam ; illustrated by Nancy Carpenter
- From cell to clone, the story of genetic engineering, by Margery and Howard Facklam ; illustrated with diagrs. by Paul Facklam and with photos