Comstock Publishing
- Bees
- Extinct Birds
- Field Guide to Grasshoppers, Katydids, and Crickets of the United States
- Diseases of Trees and Shrubs
- Tropical Plants of Costa Rica
- Owls
- A Guide to the Birds of Costa Rica
- A Field Guide to Bacteria
- Wild Urban Plants of the Northeast
- The Wildlife of Costa Rica
- One Billion Hungry
- The Birds at My Table