One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; white internal coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 0 - 60 mm in length and was assessed to be very-long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thin shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-recently dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an elliptical shape; moderately thick shell; white internal coloring; tan external coloring; no external sculpturing. Collected in the Brazos basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.

Photograph of a family posed at a fountain. Two children sit on a tree stump from where three visible pipes spurt water while one woman holds a baby in her arms. In the background are two parked cars on a dirt road and a thick line of trees. A hand written note on the photograph reads, "Glen Rose, Tex., Nell, Robert, Myra, Leighton."

Photograph of a man wearing a necktie standing in front of a car in Glen Rose, Texas around July in 1938. The car has a North Texas State Technical College Eagles sticker attached to the windshield.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Photograph of the Barnard's Mill in Glen Rose, Texas.

Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story about grass fires across Tarrant County, Texas.