Collection Number: D-571

Leffingwell’s photographic transparencies as well as his research notes for his books: Ford Farm Tractors (1998), International Harvester Tractors (1999), Farm Tractor Milestones (2000), and John Deere: A History of the Tractor (2004).
Extent

43 linear feet

Biography

Agricultural technology historian and author of The American farm tractor (1991), John Deere farm tractors (1993), Classic farm tractors (1993), and Caterpillar (1994).

Inclusive Dates

1869-2004

Subject

Agricultural Technology

Access

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