Aerial photograph of the Longview plant of R.G. LeTourneau, Inc., likely taken in the 1970s. The five domes, or semispheres, provided a unique aspect and were a familiar site in South Longview.

Photograph of a Model C Tournapull, likely from the 1940s based on similar images found online and "LeTourneau Heavy Equipment" by Eric C. Orlemann. According to him, the Model C was the most popular of the scrapers built by the company.

Photograph of the entrance to Marathon LeTourneau Company in Longview, Texas. In 1970, Marathon purchased R.G. LeTourneau, Inc. after the death of its founder, R.G. LeTourneau, and renamed the company "Marathon LeTourneau Company." The manufacturing facility was sold several more times and is now owned and operated by Komatsu.

Photograph of the experimental Series TSL-100 "Orange Peel" Electric-Loader, first built in January 1964, according to author Eric Orlemann.

Photograph of Power Packer Model M-50 Sheepsfoot Roller (according to the filename it was given.) Date of photograph is unknown. The sheepsfoot roller was popularized by R.G. LeTournea and was used to compact soil in much the same manner herds of sheep were used for the same purpose pre-machinery.

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 repairs being made on a rolling mill machine, likely in the Longview Texas, plant given the date of creation.

Photograph of Tree Roller, 20 feet wide, 42 tons, being used in the Sabine River Bottom.

Photograph of a 360 Electric Digger, an earth-moving machine with three large bowls filled with dirt, with large wheels and motors at either end and in between the bowls, including an operator partially visible in the center part of the vehicle. The Digger is in a large, empty dirt area and a wall of scraped dirt is partially visible at the back of the equipment, with trees visible in the far background.

Photograph of the F-804 Log Stacker taken at the W.T. Smith Lumber Co. in Chapman, AL.

Photograph of the R.G. LeTourneau plant in Longview, Texas. The first of these five domes, the one in the foreground, was built in 1962, while the final three were built in 1965. Two of the domes have been destroyed in separate weather events in 2018 and 2021. Each dome is 85-feet high and contains 70,000 square feet of space.

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.

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. One of the LeTourneau domes is visible in the background.

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. An unidentified U.S. Army official is pictured talking to the driver in the cab.

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 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 60-ton capacity Pacemaker Series L-67 Electric Digger, first introduced in March 1960, according to Eric C. Orlemann. Its payload capacity was 60 tons.

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 Sheep's Foot Roller, used to compact dirt.

Photograph of a 1959 version of the LeTourneau Sheep's Foot Roller, used to compact dirt. The original version was built in 1929, according to Eric. C. Orlemann.

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 a LeTourneau tree crusher, taken in 1959. It is unknown where the photograph was taken.

Photograph of a double-jointed log stacker in action. Location is unknown.

Photograph of iron ingots being melted at the rolling mill, likely in Longview, Texas.