Photograph of the intake structure of the Denison Dam , facing northeast, during a time of low water levels. The grassy shoreline can still be seen in the foreground.

Photograph of the intake structure of the Denison Dam , facing northeast, during a time of extreme high water levels. Shrubbery can be seen starting to be overcome by the high water.

Photograph of the Denison Dam spillway filling with high water levels. The water levels are visible meeting the grassy shoreline in the center of the photograph.

Photograph of the intake structure of the Denison Dam , facing northeast, during a time of unusually high water levels.

Photograph of the class of the 1938 School for Fireman in College Station, Texas. The men are gathered on the steps of a building and some are wearing peaked caps. The text reads, "Ninth Annual School for Fireman, College Station, Texas, July 18-22, 1938, Aggieland Studio."

Photograph of the class of the 1939 School for Fireman in College Station, Texas. The men are gathered on the steps of a building and some are wearing peaked caps. The text reads, "Tenth Annual School for Fireman, College Station, Texas, July 17-21, 1939, Aggieland Studio."

Photograph of Miss Paul Hill, an older woman wearing a light colored dress holding a book and standing in the Memorial Library in front of a large bookcase with a plaque that reads "Paul Hill Texana Collection."

Photograph of a man wearing a straw hat and suspenders standing in a grain field next to a girl in a light-colored dress to his right. A dog is standing on the girl's right side and above it is a handwritten text that reads: "Lon. Hill. Irrigated Farm Harlingen, Tex. Sorghum Planted May 4. Phots. July 25, '08." On the bottom of the photograph the same text is type-written.

Photograph of men riding horseback with others following behind. The man to the right is dressed in Native American clothing with a headdress on. Handwritten text on back reads "Celebrating the 76th birthday of Lon C. Hill Sr. Valley Pioneer - Founder of Harlinger, Texas. July 31, 1932".

Photograph of a parade on a city street with crowds watching on both sides and several storefronts visible on the left. In the front are two motorcyclist on either side of an automobile, followed by two men on horseback, and a large group of people wearing light-colored uniforms. On the left a row of American flags are displayed in front of the storefronts and signs for State Bank, Sherman's, Central Light Power, and Turney Drugs can be seen. More crowds and buildings are visible in the background and a handwritten note on the front of the photograph reads "Celebrating 76th Birthday Of C. Hill Sr July 31 1932. Valley Pionier - Founder of Harlingen TEx. Photo by Gardner."

Photograph of a young girl, dog, and man standing in a cotton field with trees and houses visible in the background. The girl standing in the foreground in front of the field, wearing a light-colored dress with the dog on the left and the man, wearing suspenders and a hat, is standing behind her in the field. A text on the front of the photograph reads "Lon C. Hills Irrigated Farm Harlingen Tex. Cotton Planted Apr. 20. Photo July 25 '08. Producing 1 1/2 Bales Per Acre."

Photograph of the Hill family at Del Mar Beach on July 4th. The family is pictured wearing light color clothing and standing along a grassy area of the beach. There is handwritten text on the back of the photograph listing the names of the family present.

Photograph of cavalry soldiers on horseback riding down a road with palm trees visible in the background. One of the men in the front is holding a rifle and a man on the far right appears to be wearing a Native American headdress.

Photograph of seven unidentified men wearing light-colored shirts and hats standing in the middle of a cotton field. In the foreground on the right one man is facing towards the camera, as are the three men behind him. On the left two men are spaced farther apart, standing behind horses that are facing the other direction. Trees and telephone poles are visible in the background and a text on the front of the photograph reads "Lon Hill Irrigated Farm Harlingen Tex. Cotten planted May 4. Photo July 25 08. Producing 1 1/2 bales per acre."

Photograph of Yasir Arafat (far right) waving to a crowd of people. There is a younger man standing in front of him looking at the camera and a large ship and harbor in the background.

Photograph of Rosa Parks sitting in the Columbia, South Carolina airport with a younger woman standing next to her holding her hand. "Rosa Parks 1996, July 27 Columbia, S. C. airport passed on to me, Mario Salas, 3/30/2000" is written on the back of the photo.