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  • All fields: 20.5x25.5cm
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Display: 20

    • Caterpillar D-8

    • Caterpillar D-8

    • Tractors--Testing; Caterpillar Inc.; Crawler tractors

    • Caterpillar D8 during drawbar test. Front view of Caterpillar D-8 crawler towing the Adams test car and four other load tractors. The test car is offset to the right side from the main load, which could not be transmitted through its chassis.
    • Caterpillar 22 and D-8

    • Caterpillar 22 and D-8

    • Tractors; Caterpillar Inc.; Crawler tractors

    • Size comparison. Photograph of the Caterpillar 22 and D8 diesel crawlers parked beside one another. They are on a dirt track behind the Ag. Engineering building. They were tested in the same year.
    • Waterloo Boy

    • Waterloo Boy

    • Tractors; Farm tractors; Farm tractors--Testing; John Deere tractors; Waterloo Gas Engine Co.

    • Demonstration at the Tractor Test Lab. This Waterloo Boy's manufacturer was bought later by John Deere, was the first tractor tested at the University of Nebraska in 1920. The Waterloo Boy tractor is shown on the dirt test track during a drawbar...

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