TEXAS: Jeff Davis Co; Davis Mts, Madera Canyon - August 2016
NEW MEXICO: Luna Co; Rockhound State Park - July 2015
ARIZONA: Mohave Co; Chicken Springs Road, Hualupai Mts - June 2015
TEXAS: Edwards Co; near Kickapoo Caverns State Park on FM 674 - June 2014
TEXAS: Edwards Co; near Kickapoo Caverns State Park on FM 674 - June 2013
MEXICO: San Luis Potosi; Sierra Trinidad - July 2007
MEXICO: Durango; near Rodeo - July 2007
TEXAS: Edwards Co; Camp Wood Hills - July 2007
TEXAS: Brewster Co; on FM 2627 - June 2006
UTAH: Washington Co; near Gunlock Lake - June 2006
ARIZONA: Maricopa Co; Harquahala Mts - March 2005 (scan from slide)