1. Vida Preciosa International, Inc.; P.O. Box 300 Boerne TX 78006 USA
2. Illinois Natural History Survey; Prairie Research Institute; University of Illinois Urbana Champaign; 1816 South Oak St. Champaign IL 61820 USA
3. Department of Biology and Center for Behavioral Neuroscience; Georgia State University; Atlanta GA 30303 USA
4. The Copperhead Institute; P.O. Box 6755 Spartanburg SC 29304 USA
5. Chiricahua Desert Museum; P.O. Box 376 Rodeo NM 88056 USA