Photograph of old adobe houses in a flood plain on Rio Grande River in Big Bend National Park. There is various plant life growing throughout the surrounding area.

Photograph of Adolph Streng at Boquillas Canyon in Big Bend National Park. Some plant life is growing throughout the surrounding area.

Photograph of Boquillas Canyon in Big Bend National Park. Adolph Streng is located in the bottom right hand corner of the photo and desert vegetation is growing throughout the surrounding area.

Photograph of a man with donkeys at Boquillas Crossing located in Big Bend National Park. There is a sign that reads, "This ford of the Rio Grande is an international port providing access to the village of Boquillas, Coahuila Mexico. Trucks ford the river during low water. The villagers cross on horses and burros. United States department of the interior national park service."

Photograph of a view of Boquillas, Mexico across Rio Grande River from the Texas side of the water in Big Bend National Park. There is a gathering of structures beyond the shore and there is some vegetation growing throughout the surrounding area.

Photograph of a view of Castolon Peak along a gravel road on the way to Santa Elena in Big Bend National Park. Various plant life is growing throughout the surrounding area.

Photograph of a side view of the Chisos Mountains and alluvial fans on the way to Santa Elena located in Big Bend National Park. There is vegetation growing in the foreground of the photo.

Photograph of a "Farming the Floodplain" sign on Rio Grande River in Big Bend National Park. Various plant life is growing throughout the surrounding area.

Photograph of the climax of Lost Mine Peak. Paul Streng is located on a large rock, various plant life is growing in the area, and a mountainous landscape is visible in the distance.

Photograph of Lost Mines Trail towards The Window in Big Bend National Park. Vegetation is growing along the mountainsides and a tree is located in the foreground of the photo.

Photograph of ocotillo cacti and desert pavement in Big Bend National Park.

Photograph of Paul Streng at Pecos Canyon near the mouth of Rio Grande River in Big Bend National Park. Streng is sitting on a brick wall beside a sign that reads, "From this point you can see the mouth of the Pecos River. The Rio Grande River and hills in old Mexico."

Photograph of the Rio Grande River running through Santa Elena Canyon with Mexico on the left and Texas on the right located in Big Bend National Park. Some plant life is growing along the river's edge.

Photograph of the Rio Grande River running through the mouth of Santa Elena Canyon located in Big Bend National Park. There is some plant life growing throughout the area.

Photograph of a roadway going through the Max Starcke Park in Seguin, Texas. Trees line either side of the road and the Guadalupe River can be seen to the left of the road.

Photograph of the Santa Elena Canyon entry in Big Bend National Park. The Rio Grande River is running through the canyon and there is plant life growing in the foreground of the photo.

Photograph of a view of Sierra del Carmen in Big Bend National Park. Various desert vegetation is growing throughout the surrounding area.

Photograph of a white, wooden house with a brick chimney located on the Texas Lutheran College campus. Accompanying information describes this as a house being removed from the campus during the summer of 1968. Around the exterior of the house various debris and wood planks can be seen as part of the removal process.

Photograph of the harbor at Corpus Christi. A young boy is fishing at the end of a dock in the foreground of the photo. There are small boats docked along the harbor in the background and there are buildings and palm trees located in the distance.

Photograph of a fountain located on the fairgrounds at Hemisfair Park located in San Antonio, Texas. The fountain is shaped like a ball and has long rods spraying water coming out from the center sphere. Behind the fountain there is a red and white striped carnival booth and some unidentified buildings. A red aerial car and wires can be seen above the fountain.

Photograph of the outside of the U.S. Pavilion at Hemisfair tower in San Antonio, Texas. There are bird like sculptures and a fountain outside of the building and a group of people near the entrance.

Photograph of the base of the Tower of the Americas at Hemisfair Park. A variety of flags are around the base of the tower and a red and white striped tent is visible. Accompanying information identifies one of the individuals in the photo as Paul Streng and several other unidentified people are visible.

Photograph of the view of Hemisfair grounds from the observation deck of the Tower of the Americas. The image shows several carnival rides and groups of people walking around the fair grounds. Hemisfair park is located along a river and several small boats and fountains are visible.

Photograph of the Hemisfair tower from the Institute of Texan Cultures in San Antonio, Texas. There are buildings and flags located at the base of the tower.