List of John Deere tractors - Wikipedia
John Deere - Wikipedia
Complete John Deere History Timeline - 1837 to Today
File:John Deere 1640.jpg - Wikipedia
John Deere Model GP - Wikipedia
John Deere - Wikipedia
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File:John Deere 7920 tractor.jpg - Wikipedia
John Deere, Biography, Steel Plow, Company, & Facts
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John Deere Model A - Wikipedia
File:John Deere Model 60 1955.jpg - Wikipedia
John Deere Model R - Wikipedia