Photograph of the LeTourneau Industries oil rig building facility near Vicksburg, Mississippi, which began operation in 1944. The photograph shows three rigs under construction.

Photograph of the LeTourneau Industries oil rig building facility near Vicksburg, Mississippi, which began operation in 1944. The photograph shows the final testing for the jack named Vinegaroo built in 1957 by Marathon LeTourneau Vicksburg for Zapata Drilling.

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 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 tong on Series "F" Log Stacker (Model C-4) shown picking up a log. According to author Eric Orlemann, LeTourneau got into the log-stacking business after selling the original company to Westinghouse in 1953 and agreeing not to build earthmoving equipment for five years. It proved to be highly successful. The log stackers were used all over North America as well as overseas.