Collection consists of 148 photographs of Hyster forklifts and various types of grapples, including: Blow-Knox, Owen, Mack, McCaffery, Priest, Young Iron Works, and Esco. Leslie Ehmann attended Benson Polytechnic High School, was an engineer and designer, and designed lift truck components for Hyster Company.

Leslie G. Ehmann attended Benson Polytechnic High School in Portland, Oregon, joined Esco Corp. in 1936, served as an engineer and designer, and retired in 1971. He also designed lift truck components for Hyster Company. Collection includes catalogs, specifications and price lists for Esco and Hyster products, 1941-1984, including lift trucks, logging equipment, rigging equipment and swage presses; patents; and plans for an adjustable rubber coupling.

Collection consists of materials relating to the Hyster Company, including photographs of a plant interior and employees; a brochure and report about the company; materials concerning accounting machine installation; a sales booklet with product specifications; and party programs.