R. G. LeTourneau Heavy Equipment: The Mechanical Drive Era (1921-1953) (A Photo Gallery)
Eric C. Orlemann has worked as a professional photographer and communications specialist in the industrial advertising field for over 27 years. As the proprietor of ECO Industrial Communications, he counts many of the large earthmoving equipment manufacturers in the industry as his clients. Over the years, Orlemann has amassed one of the world’s most significant private earthmoving photographic collections. In addition to authoring or co-authoring thirteen books concerning earthmoving equipment manufacturers, and various other ultra-large earthmovers, Orlemann has contributed numerous articles to the Equipment Echoes, the Historical Construction Equipment Association’s official newsmagazine. Orlemann has also acted as a technical consultant concerning heavy equipment for various popular cable television networks including The History Channel, The Learning Channel (TLC), and The Discovery Channel.