NEVADA: Lincoln Co; Cathedral Gorge State Park - July 2011
MEXICO: San Luis Potosi; Sierra Trinidad - July 2008
TEXAS: Brewster Co; Black Gap WMA - July 2008
MEXICO: Durango; near Rodeo - August 2007
TEXAS: Jeff Davis Co; near Valentine - May 2007
TEXAS: Brewster Co; Black Gap WMA - August 2006
TEXAS: Brewster Co; south of Alpine - July 2006
CALIFORNIA: Inyo; east slopes of Kern Plateau - June 2006
CALIFORNIA: Kern Co; near Lake Isabella - June 2006
TEXAS: McMullen Co - May 2003 (scan from slide)
TEXAS: Throckmorton Co - April 1999 (scan from slide)