The John Deere Model 40 and Other Dubuque Built Tractors ... Review
The Model 40 was built by John Deere for model year 1953 to 1955. Some 48991 tractors were built in 7 different configurations. (T) Tricycle (S) Standard (C) Crawler (U) Utility (W) Two Row (H) High Crop (V) Special/Vegetable . The 40 was the end to most all of the remaining horse and mule powered farming.