Photograph of a LeTourneau Sheep's Foot Roller, used to compact dirt.

Photograph of a three-wheeled G-40 tree crusher. According to author Eric Orlemann, the overall working weight was 84,000 pounds, or 42 tons. A total of 10 G-40 tree crushers were built.

Photograph of a LeTourneau tong crane picking up an automobile as a man watches. The inscription on the front of the crane indicates the photograph was taken in Longview, Texas, which was the primary plant and headquarters of the company by 1956.

Photograph of a Series "R" Log Loader, according to information from author Eric Orlemann. It was designed to load logs onto trucks for transit. Only three Series "R" Log Loaders were listed as being built.

Photograph of LeTourneau transporter being put through its off-road tests. Its six wide tires made it especially well-suited for very sandy environments, such as deserts.

Photograph of an early version of LeTourneau's FL-50 Fork Lift Truck, shown picking up an 18-wheeler trailer. The company began making the trucks in mid-1961, according to author Eric Orlemann. A total of four of the FL-50 Fork Lift Trucks were built.

Photograph of the first self-propelled earth scraper, built by R.G. LeTourneau in 1923. According to Eric C. Orlemann, who published several books about the company's earthmoving equipment, the machine used "an all-electric drive design, powered by a front-mounted gasoline engine and dynamo. " It was capable of carrying a 12-cubic-yard payload.

Photograph of a L-15908 tree roller. It was a diesel-electric machine designed to quickly push down and crush trees. This model was used in Tournavista, Peru, a mission town founded by the LeTourneau Foundation, the charitable arm of the company.

Photograph of R.G. LeTourneau demonstrating the Tournatow to Longview (Texas) newspaper publisher Carl Estes. It was the first vehicle to feature electric-traction motors mounted in the wheel assemblies themselves. The four-wheel-drive and -steer tractor was being demonstrated at the Edgewater Beach Hotel in Chicago, Illinois, on 1950-11-17.

Photograph of a digging machine that can dig its way right up a straight bank. Unsure of Model number.

Photograph of a Model-D Tournapull attached to the Carryall Model Q. According to information found online (https://contract295dev.wpenginepowered.com/classic-machines/model-d-tournapull/), the company built this combination, an "air transportable earthmover," for the U.S. Army from 1942-1946, during World War II. From 1942 to 1946, LeTourneau built over 600 of these machines and continued production after the war. This photograph was clearly meant for a brochure or catalog, since the background has been eliminated.

Photograph of LeTourneau's overland train snaking its way through downtown Longview on April 20, 1954

Photograph of a Track-less Land Train carrying a large load of pipe. The Land Train was outfitted with 24 electric-driven wheels.

Photograph of a LeTourneau Model C-6 Transporter carrying a tree roller. The transporter had six electric drive wheels and a load capacity of 35 tons, according to Eric C. Orlemann

Photograph of the Series 90-S Mobile Spar. According to author Eric Orlemann, "the Mobile Spar was a diesel-electric transporter equipped with a folding 130-foot guy wire tower." It was built for hauling lumber up steep slopes. Only one unit was built and sold to a lumber company in McCall, Idaho.

Photograph of a Series K-205 diesel-electric-drive tractor-dozer, the largest and most powerful dozer of its day, according to author Eric Orlemann. The dozing blade was 20 feet wide, and the overall working weight of the K-205 was 160 tons. Only one of these massive machines was ever produced.

Photograph of a Model C-6 Transporter demonstrating its off-road capabilities. The Transporter was powered by a large 300-hp Buda Super Diesel engine, according to author Eric Orlemann. Its generator provided power to electric traction motors in all six wheels. Its load capacity was 35 tons.

Photograph of one of LeTourneau's digging machines, which was capable of digging its way right up a straight bank as seen here. The photo was taken on 1955-04-14, according to the filename given to the image.

Photograph of an employee of R.G. LeTourneau, Inc., at the controls of the Tournatow, the first vehicle to feature electric-traction motors mounted in the wheel assemblies themselves. The four-wheel-drive and -steer tractor is being demonstrated at the Edgewater Beach Hotel in Chicago, Illinois, on 1950-11-17.

Photograph of a group of unidentified men standing in front of a LeTourneau tree roller in Tournavista, Peru. The R.G. LeTourneau Foundation built this city on the headwaters of the Amazon River by clearing 990,000 acres it had been granted by the Peruvian government in exchange for building 31 miles of road through the Amazon rainforest.

Photograph of LeTourneau's Tree Roller No. 2. (A very similar photo is thus described in "R.G. LeTourneau Heavy Equipment: The Electric Drive Era," by Eric Orlemann. After being field tested in Longview, Texas, this unit was shipped to Tournavista, Peru, to be used in land clearing projects there for the LeTourneau Foundation mission. The overall weight of the tree roller was about 100 tons.

Photograph of a LeTourneau log stacker. The log stacker was introduced in 1955 (the date of this photograph) as its first diesel-electric drive Series "F" Log Stacker, Model C-4, according to Eric Orlemann. It had a rear-mounted engine and all electric wheel drive. This would serve as a basic pattern for all stackers to be built by the company into the 1980s.

Photograph of the Series "G" Tree Crusher No. 5 model. According to Eric Orlemann, this unit had its two diesel-electric generator sets mounted side by side. The inscription on the side of the cab reads "LeTourneau Tree Crusher. Made by Mississippi Division of R.G. LeTourneau, Inc., Longview, Texas.

Photograph of the Model TC-497 Overland Train Mkii, the largest and most powerful of all the "land trains" produced by LeTourneau. The TC-497 was built for the U.S. Army to transport cargo in the Arctic under a wide variety of road conditions, according to author Eric Orlemann. It contained nine cargo trailers, a control car and two trailing power units. The TC-497 weighed 135 tons. Its overall length was about 527 feet.