Vintage postcard of prisoners from the East Texas Penitentiary performing maintenance work on the Texas State Railroad, circa 1913. Armed guards supervise the prisoners, who are digging ditches along the sides of the track and roadbed.

Photograph of six dry kilns built by the National Dry Kiln Company of Indianapolis, Indiana for the Southern Pine Lumber Company. This view is looking from the northeast. By 1907 the company had 12 kilns which held 544,400 feet of lumber.

Photograph of the Southern Pine Lumber Company planing mill engine room taken with flashlight. The mill was powered by a 500 horsepower Corliss engine.

Photograph of the Southern Pine Lumber Company sawmill 2 engine room. This is a Corliss steam engine built by Filer & Stowell.

Photograph of the exterior of the Southern Pine Lumber Company manufactured lumber shed.

Photograph of the interior of the Southern Pine Lumber Company molding shed, also showing workers in the background.

Photograph of the interior of the Southern Pine Lumber Company commissary in 1903. Stocking almost everything carried by a modern "superstore" as well as such items as fiddle strings, horse collars, coffins and caskets, it was a complete shopping center and mall under one roof. It also contained doctor offices, a drug store, and the post office.

Photograph of the Southern Pine Lumber Company main office building in Diboll, Texas.

Photograph of the Southern Pine Lumber Company loading dock and freight cars from the Missouri-Kansas-Texas Railroad and the St. Louis Southwestern Railway. The planing mill is seen in the background. The planing mill had a daily capacity of 250,000 board feet.

Photograph of south end of the Southern Pine Lumber Company loading dock showing lumbermen pushing carts of lumber. The dressed lumber sheds are shown in the background. Also shown are cars from the Missouri-Kansas-Texas Railroad.

Photograph of African American lumbermen loading lumber into freight cars.

Photograph of a man pushing a loaded lumber cart along the north end of the loading dock next to St. Louis Southwestern Railway Company cars.

Photograph of the Southern Pine Lumber Company planing mill, mill machinery, and mill workers. The planing mill was 14,000 square feet with machinery made by Hall & Brown Wood Working Machinery Company, including the inside molder, outside molder, a double sizer, one 18-inch machine, three 15-inch machines, six 9-inch machines, two resaws and two edgers. The planing mill had a capacity of 250,000 daily board feet.

Photograph of the Southern Pine Lumber Company planning mill, machinery, and workers. The planing mill was 14,000 square feet with machinery made by Hall & Brown Wood Working Machinery Company, including the inside molder, outside molder, a double sizer, one 18-inch machine, three 15-inch machines, six 9-inch machines, two resaws and two edgers. The planing mill had a capacity of 250,000 daily board feet.

Photograph of the Southern Pine Lumber Company planning mill interior showing lumber, machinery, and an employee. The planing mill was 14,000 square feet with machinery made by Hall & Brown Wood Working Machinery Company, including the inside molder, outside molder, a double sizer, one 18-inch machine, three 15-inch machines, six 9-inch machines, two resaws and two edgers. The planing mill had a capacity of 250,000 daily board feet.

Photograph of a Southern Pine Lumber Company worker at a Corliss steam engine in one of the company sawmills. The engine was built by Filer & Stowell Company of Milwaukee, Wisconsin.

Photograph of a Southern Pine Lumber Company worker in front of company self-stoking sawmill boilers.

Photograph of the interior of Southern Pine Lumber Company's sawmill and various mill workers. Construction for this mill began on March 1, 1903, and the mill became operational on June 12 of the same year. The mill was powered by a 500 horse powered Filer & Stowell 24x40 inch Corliss steam engine, producing 250,000 board feet daily as well as 60,000 feet of lath. It replaced the original mill that was built in 1894. This mill was destroyed by fire on January 7, 1968 and rebuilt by September of that year.

Photograph of the interior of the Southern Pine Lumber Company lath mill with workers and nearby machinery.

Photograph of the Southern Pine Lumber Company boarding house in Diboll, Texas.

Photograph of the Southern Pine Lumber Company sawmill and mill firehouse, aerial view. The mill pond is shown in the background. Construction for this mill began on March 1, 1903, and the mill became operational on June 12 of the same year. The mill was powered by a 500 horse powered Filer & Stowell 24x40 inch Corliss steam engine, producing 250,000 board feet daily as well as 60,000 feet of lath. It replaced the original mill that was built in 1894. This mill was destroyed by fire on January 7, 1968 and rebuilt by September of that year.

Photograph of the Southern Pine Lumber Company planing mill, aerial view.

Photograph of the Southern Pine Lumber Company dry kilns. The kilns were built by the National Dry Kiln Company of Indianapolis, Indiana. The structure consisted of six rooms 2,400 square feet each that could hold up to 300,000 feet of lumber and turn out 100,000 feet of dried stock daily.

Photograph of the Southern Pine Lumber Company lumber yard with company housing depicted in the background.