DVD #6: John Deere Day- 1957 The first year of the "20" Series Tractors- COLOR (118 minutes). The first year of the "20" Series Tractors, includes: "Oddities in Farming": a feature about Self-Propelled Combines; the Gordon Family film "Please pass the Pasture"; "Making Tractor History"; and "What's New for 1957." A supplementary film about "20" Series Crawlers, "Tractors for Woodland Operations" completes the 1957 presentation.