Positive transparency of a ruined adobe dwelling. An open doorway to the building has an exposed wooden frame. Another exit is visible through the doorway.

Positive transparency of Aztec Cave in the Franklin Mountains near El Paso, Texas. "Class of 69" and "Jesuit Sacto" are written in the back of the shallow cave.

Positive transparency of a banded boulders at Hueco Tanks State Park & Historic Site. There is vegetation growing among the rocks in the foreground.

Positive transparency of a rocky canyon in Big Bend National Park in Texas. A stream runs at the base of the rocks, and tall grasses grow along the river's bank.

Positive transparency of a rocky canyon in Hueco Tanks park in Texas. Trees are growing in the lit crevices and floor of the canyon. The floor of the canyon is in shadows.

Positive transparency of a cave ceiling in Hueco Tanks State Historical Park in Texas. Numerous holes with irregular shapes mar the stone.

Positive transparency of cave graffiti at site seventeen in Hueco Tanks State Historical Park. "M. F. Wayland, Jul. 25th, 1884" is written into the wall inside of a drawn frame of geometric shapes. Other words and initials can be seen on the wall.

Positive transparency of cave graffiti in El Cañón de la Virgen at Hueco Tanks State Historical Park. "Josie 70" is written into the square on the wall. Under that are the letters "ABCARBAJL." "1984" is written to the right.

Positive transparency of a narrow cave in Hueco Tanks State Historical Park in Texas. Light can be seen coming from between boulders in the background.

Positive transparency of a cave painting at site seventeen in Hueco Tanks State Historical Park. The image depicts a winged animal.

Positive transparency of cave graffiti at site seventeen in Hueco Tanks State Historical Park. A pictogram depicting an animal is drawn upon the side of the cave.

Positive transparency of a canyon in Cottonwood Spring, Texas. A river-like layer of rocky deposits lies between the two walls of the canyon.

Positive transparency of La Cueva del León in Hueco Tanks State Park. Light can be seen filtering through the rocks from above and from the right.

Positive transparency of the entrance to Aztec Cave in the Franklin Mountains Tom May Park near El Paso, Texas. "Eddie" is written on the rocky surface outside of the cave. Rocks and short grasses lie in front of the cave.

Positive transparency of the entrance to Comanche Cave in Hueco Tanks Park near El Paso, Texas. A rocky slope covers the shadowy entrance. Short vegetation grows on the mountainside underneath the cave.

Positive transparency of Comanche Cave in Hueco Tanks Park near El Paso, Texas. The narrow cave has writing scribbled along several spots. Patches of ferns and other plants grow out of crevices in the cave.

Positive transparency of Indian Spring Canyon in Franklin Mountains near El Paso, Texas. Mountains fill the background, while a desert area with scrub vegetation fills the foreground.

Positive transparency of a rocky ravine on Mount Cristo Rey. Flowers and wiry vegetation grows among the rocks.

Positive transparency of a mountainside in Cottonwood Spring. A tree, shrubs, and low grasses grow around the rocky base of the mountain.

Photograph of the El Paso skyline with several skyscrapers rising above the surrounding buildings. The Bassett Tower and Hotel Cortez can be seen to the left. The El Paso Natural Gas Building was built across from the Bassett Tower on Texas Street in 1954. The vantage point of the picture is from the Old Mesa Gardens which later became a part of the backyard of a house on the 600 block of W. Yandell. Today the house and land are part of the El Paso Historical Society offices and is known as the Burges House

Photograph of city streets and businesses in El Paso, Texas. Cars and people can be seen along the street. Several of the buildings are adorned with advertisements and signs.

Positive transparency of a sandstone formation in Big Bend National Park. Bare shrubs and patches of dry grasses surround the base of the formation. Mountains are visible in the background.

Positive transparency of a sandstone formation in Big Bend National Park. Two bare shrubs and patches of dry grasses surround the base of the formation.

Positive transparency of Santa Elena Canyon in Big Bend National Park. Short grasses cover the plain in the foreground.