Photograph of a group of people in a cave posing for a portrait at Longhorn Caverns State Park. Two people are holding children, and a couple is standing apart from the rest of group.

Photograph of a cave at the Longhorn Caverns State Park. There is a group of people standing inside a cave with a park ranger, and one woman is sitting on the wall.

Photograph of a view of Longhorn Caverns State Park. There are steps down into the caverns, and there is a house on a hill in the background.

Stereographic photographs of large rocks with trees in the background.

Photograph of a tree growing through a boulder, with the boulder cracked midway. A handwritten note on the back of the photograph says, "Tree splits a granite boulder near Marble Falls, TX, Llano County 1879."

Photograph of the Austin and Northwest Railroad depot in Marble Falls. The train station consists of a small building (on the right) with a garden (in the foreground). Men and women are gathered around a train and the building, looking towards the camera.

Photograph of the Colorado River near Marble Falls. The river cuts between two hills, with the photograph being taken from one of them. A note on the back indicates the photo was taken from a bridge at Marble Falls.

Photograph of farmland in Burnet, Texas. A farmer can be seen harvesting crops in the distance.

Photograph of the town of Marble Falls. Dirt roads criss-cross into the town. There are two circles of buildings in the distance, with people and horses standing in the dirt roads. A handwritten note on the back says, "Marble Falls, Texas 1879, Bank Saloon, Granite [Mountain?]"

Photograph of a bridge over the Colorado River near Kingsland and Marble Falls, taken from a distance and capturing it from the side. People are seen crossing the bridge on foot.

Photograph of a lady in a carriage in front of a two-story house. The caption on the back reads "This is the buggy we had in the parade in Bonham, Texas in [blank]. [Illegible] Grace McQuigg driving. The McQuigg Wilson Mercantile Co.'s entry."

Photograph of a river and the surrounding landscape near Marble Falls. A handwritten note on the back of the photograph says, "Colorado River, Texas - 1879, near Marble Falls, below the falls."

Photograph of a man standing in the ruins of Fort Croghan in Burnet County. The ruins consist of a very low stone wall and other stones strewn about a field.

Photograph of the entrance to Longhorn Caverns from an aerial point of view. The cavern entrance and roadways leading to it can be seen at the bottom center while the surrounding natural landscape stretches out to the horizon. Various small building structures can be seen on the campus of the cavern entrance.

View of the cut stone yard in Burnet, Texas. The stones were used to construct the Texas state Capitol building.

Photograph of Fairland Depot in Burnet County. A train engine is on the tracks and passengers wait to board on a small platform. A caboose can be seen in the distance on right on a second set of tracks. A windmill and water tower stand in front of the depot building, and some type of mechanical or construction apparatus can be seen on the far left in the foreground. The image is partially obscured due to deterioration of the original photograph.

Photograph of a bridge over the Colorado River near Kingsland and Marble Falls. People are crossing it on foot. There is a town and residential area (possibly Kingsland or Marble Falls) visible in the background.

Photograph of two men in a hilly landscape, with a moving train in the background. A handwritten note on the back of the photograph reads, "Granite Mountain near Marble Falls, Texas 1882, A&NW [Austin and Northwest] Narrow Gauge R.R."

Photograph of the Colorado River near Marble Falls, Texas. The river meets with steep hills on both sides. Photograph is cabinet card format.

Photograph of the town of Marble Falls. Two dirt roads lead into the town. Several buildings are visible in the distance, with hills covering the horizon. A handwritten note on the back of the photograph says, "Marble Falls [...] Hotel, Chalk Hotel, [...] Stone, Kingsland ? Antlers Hotel, From Project Saloon, Pare Hotel."

Photograph of people and horses gathered around a deposit of granite. The granite is cut into progressively smaller blocks from its original mass. A handwritten note on the back of the photograph says, "Granite Mountain about 1884. This mountain of granite supplied 50,000 tons of granite for the Texas State Capitol at Austin and about 450,000 tons to Galveston for the sea wall and jetties."

Photograph of the Colorado River. A handwritten note on the back of the photograph says, "The Colorado Northwest of Austin. Llano County, Kingston, Below Falls [...]"

Photograph of large wool scouring equipment from Marble Falls. There are several men standing on and in front of the equipment. The picture was taken at the site of the Walker's Austex Chili Plant in downtown Austin.

Photograph of an Austin and Northwest Railroad train moving through the countryside. Several people are visible on the rear cart of the train, looking at the camera. A handwritten note on the back of the photograph reads, "Excursion on A&NW RR narrow engine about 1882 near Burnet. W.J.L. Sullivan -- Texas Ranger in for ground with work. Slaughter Gap near Fairland and Marble Falls."