Alan Cressler:
Asa Jones Camp, Night 4 (Mexico), Mexican Spring Run, Rio Grande-Rio Bravo del Norte, Rio Grande Wild and Scenic River-Monumento Natural Río Bravo del Norte, Mile 738-739, Brewster County, Texas and Coahuila, Mexico 1
Alan Cressler:
Asa Jones Camp, Night 4 (Mexico), Mexican Spring Run, Rio Grande-Rio Bravo del Norte, Rio Grande Wild and Scenic River-Monumento Natural Río Bravo del Norte, Mile 738-739, Brewster County, Texas and Coahuila, Mexico 2
Alan Cressler:
Bynum Creek, above Highway F.M. 744, near Malone, Hill County, Texas 1
Alan Cressler:
Bynum Creek, below Highway F.M. 744, near Malone, Hill County, Texas 1
Alan Cressler:
Camp Night 3 (Texas), Rio Grande-Rio Bravo del Norte, Rio Grande Wild and Scenic River-Monumento Natural Río Bravo del Norte, Mile 742-743, Brewster County, Texas and Coahuila, Mexico 1
Alan Cressler:
Camp Night 8, HZ-34, Bou-Rouch Sample 1-4, Rio Grande-Rio Bravo del Norte, Rio Grande Wild and Scenic River-Monumento Natural Río Bravo del Norte, Mile 710-711, Terrell and Brewster Counties, Texas and Coahuila, Mexico 1
Alan Cressler:
Can Creek, Can Creek Canyon, Lost Maples State Natural Area, Bandera County, Texas 1
Alan Cressler:
Can Creek, Can Creek Canyon, Lost Maples State Natural Area, Bandera County, Texas 2
Alan Cressler:
Can Creek, Can Creek Canyon, Lost Maples State Natural Area, Bandera County, Texas 3
Alan Cressler:
Can Creek, Can Creek Canyon, Lost Maples State Natural Area, Bandera County, Texas 7
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 1
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 2
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 24
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 25
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 29
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 30
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 32
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 39
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas 4
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas, Jeff Moore 1
Alan Cressler:
Cattail Canyon, Chisos Mountains, Big Bend National Park, Brewster County, Texas, Manuel Beers 1
Alan Cressler:
Chisos Mountains, from Santa Elena Canyon, Rio Grande, Big Bend National Park, Brewster County, Texas and Parque Nacional Canon de Santa Elena, Chihuahua, Mexico 1 1
Alan Cressler:
Devil's River, Devil's River State Natural Area and Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 1
Alan Cressler:
Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 2
Alan Cressler:
Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 3
Alan Cressler:
Devil's River, Dolan Falls Preserve, The Nature Conservancy, Val Verde County, Texas 4
Alan Cressler:
Devils River Spring, Devils River State Natural Area, Val Verde County, Texas 1
Alan Cressler:
Devils River, Devils River State Natural Area, Val Verde County, Texas 1
