The James E. Deacon Pupfish Research Files (approximately 1960-2015) contain files kept by James E. Deacon, who was a faculty member in the biological sciences and environmental studies department at the University of Nevada, Las Vegas. The collection primarily contains research files and audiovisual recordings about the Devils Hole pupfish, an endangered species of desert fish only found in Nevada. Also included are copies of Deacon’s testimony and reports for a hearing from 2011 on the probable groundwater pumping by the Southern Nevada Water Authority in Spring, Cave, Dry Lake, and Delamar Valleys (SCDD) in Nevada. The SCDD files also contain copies of exhibits referenced by Deacon in his initial and rebuttal reports for the hearing.