Dozers

International Harvester TD-24 '1947–59

John Deere MC '1949–52 Produced in 10509 copies

International Harvester TD-18A '1949–58

Allis-Chalmers Model HD-9 '1950–55

Allis-Chalmers Model HD-20 '1951–54

Caterpillar D8 (13A) '1953–55

Allis-Chalmers Model HD-21 Series A '1954–69

• all pictures (5)

Caterpillar D9X Prototype '05.1954 Produced in 10 copies

Caterpillar D9 '1955

Caterpillar D8D '1955–56