The Knaus-Gavitt collection consist mostly of correspondence and miscellaneous documents to Warren Knaus and W.W. Gavitt.

This collection consists of the personal papers of Peter Dunning Ashlock, which includes research, manuscripts, and publications. It is also comprised of travel information and materials from professional organizations. The collection also includes correspondence as well as newspapers and a map.

Beamer taught at the Entomology Museum at the University of Kansas from 1914-1955. This collection consists of his field notes and research from 1913-1941 and 1946-53, along with photographs from field expeditions in various states throughout the United States and in Mexico and Canada from 1930-1950.

This collection consists of field notes and glass plates from the papers of University of Kansas zoology professor William Jacob Baumgartner. Glass plate negatives involve subjects of science, steel production and mining, penal institutions, pharmacy, and botany. Entomology field survey notes are from several different staff and faculty at the University of Kansas and its Museum of Natural History, including R.H. Beamer.

Warren Knaus, or Kraus, lived in McPherson, Kansas and was interested in the study of entomology. This collection contains 33 letters dated 1896-1935, written by entomologists in Canada to W. Knaus. The letters delve into the study of insects.