Most Popular Books
- Pictorial Checklist of Colorado Birds: With Brief Notes on the Status of Each Species in Neighboring States of Nebraska, Kansas, New Mexico, Utah, and Wyoming.
- Birds of New Zealand: Denver Museum of Natural History, Museum Pictorial, No. 11
- Subantarctic Campbell Island: Denver Museum of Natural History, No. 10
- Wildlife of Australia
- Stepping Stones Across the Pacific: Museum Pictorial No. 3
