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Leffingwell, Randy (1948-). Papers.

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

Finding Aid

Finding Aid on the Online Archive of California

Inclusive Dates



53 linear feet


Agricultural Technology