Nevada: US EPA, National Exposure Research Lab - ESD/LEB, P.O. Box 25047, Las Vegas, NV 89193-3478, Principle Investigators: Bruce Jones, Bill Kepner, David Bradford, Habitat Modelers: David Bradford, Chad Cross, Bruce Jones.
New Mexico: New Mexico Cooperative Fish & Wildlife Research Unit, New Mexico State University, P.O. Box 30003, MSC 4901, Las Cruces, NM 88003, Principle Investigators: Bruce Thompson, Ken Boykin, Database Creator: Robert Deitner, Habitat Modelers: Susanne Propeck-Gray, Jennifer Puttere, Cynthia King, Zachary Schwenke,
Utah: RS/GIS Laboratory, College of Natural Resources, UMC 5275, Utah State University, Logan, UT 84322-5275, Principle Investigators: Doug Ramsey, John Lowry, Habitat Modelers: Wendy Rieth.
NatureServe: NatureServe, 2400 Spruce St., Suite 201, Bolder, CO 80302, Vegetation Ecologists: Keith Schulz, Pat Comer.
USGS/Biological Resources Discipline: P.O. Box 30003, MSC 4901, Las Cruces, NM 88003, SWReGAP Project Coordinator: Julie Prior-Magee.