Covered within the pages of this book is all the essential information and vital specifications on the Nebraska Test Tractors built from 1920 to 1960, tests designed to protect consumers from substandard tractors by evaluating performance, durability, and safety. Information gleaned from these tests include such things as dimensions, capacities, engine configurations, maximum brake horsepower, maximum drawbar power, and more. Includes a timeline of crucial events in the history of farming.