This collection contains research and academic papers on entomology (8 items), three of them written by Hatch’s students at the University of Washington in the 1930s; also, general correspondence and brochures, and programs concerning pest control conferences.

Weekly, monthly, quarterly, and annual reports from stations chiefly in Idaho, Oregon, and Washington state concerning pea weevils, pea aphids, and sugar beet insects. Included are a few similar reports issued by the University of Idaho Research and Extension centers at Kimberly and Tetonia, and other agencies.