Trees
Alexander C. Martin & Herbert S. Zim
Fishing
George S. Fichter & Phil Francis
Geology
Frank H. T. Rhodes
Weather
Paul E. Lehr, R. Will Burnett & Herbert S. Zim
Rocks, Gems and Minerals
Paul R. Shaffer & Herbert S. Zim
Wildflowers
Alexander C. Martin & Herbert S. Zim
Birds
Herbert S. Zim & Ira N. Gabrielson
Fossils
Frank H. T. Rhodes, Paul R. Shaffer & Herbert S. Zim
Insects
Clarence Cottam & Herbert S. Zim
Sharks
Andrea Gibson