DE0001. Down to Earth at McKinney Falls State Park, Texas, by J. A. Raney. 31 p., 23 color figs., 1997. DE0001. Down to Earth at McKinney...
DE0002. Down to Earth at Tuff Canyon, Big Bend National Park, Texas, by D. S. Barker. 40 p., 26 color figs., 2000. DE0002. Down to Earth at Tuff Canyon,...
DE0003. Down to Earth at Big Bend Ranch State Park, Texas: Geologic Map and Trail-Side Geology, by C. D. Henry and J. A. Raney. Folded, double-sided color map and text, mapĀ scale 1:80,000, 2002. DE0003. Down to Earth at Big Bend...
DE0004. Down to Earth at Mustang Island, Texas, by J. A. Raney and W. A. White. 77 p., 103 colorĀ figs., 2002. DE0004. Down to Earth at Mustang...
DE0005. Down to Earth at Pedernales Falls State Park, Texas, by E. G. Wermund and V. E. Barnes. 48 p., 49 color figs., 2003. DE0005. Down to Earth at Pedernales...