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 a LeTourneau transporter with a log bunk. The original unit was built in 1955, according to author Eric Orlemann.

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 "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 a Series "G" Tree Crusher manufactured at the Vicksburg plan. Author Eric Orlemann said this model was 20 feet wide and weighed 150 tons.

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 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 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 AN A34 tree crusher with hexagon shaped wheels at Stumpy Point.

Photograph of what was unofficially called The Big Plow with a 6-foot disc. The Series H (Model 6-16) was introduced in 1955, according to, Eric C. Orlemann's book on LeTourneau earthmoving equipment.

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

Photograph of double jointed log stacker. Location unknown.

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

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

Photograph of a tree roller that was 20 feet wide and weighed 150 tons, being used in the jungles of the Amazon in Peru, where the LeTourneau Foundation created a mission town called Tournavista.