He was interested in several fields of science including botany, ornithology and geology but his primary focus was entomology. He was well-known as a field naturalist, based on 26 years of field collecting trips that he organized and led throughout Kansas, Arizona, Colorado, New Mexico and Texas.
He had interests in botany, ornithology, and geology but his principal area of study was entomology. Known for his work as a field naturalist, he conducted 26 years of organized and led collecting trips across Kansas, Arizona, Colorado, New Mexico, and Texas.