With a weight of 70 tons and boasting 524 horsepower, the HD-41 crawler tractor made headlines as the largest built up to that time. Allis-Chalmers gave at-tendees a taste of things to come at the ...

Even though he has nearly 70 classic tractors in his collection, Rich Bergeson insists every one of them has a story. That even goes for the 15 Allis-Chalmers D21 models he owns. It’s not surprising ...

The Allis-Chalmers Manufacturing Co. (later Fiat-Allis and Fiatallis) made heavy construction equipment from 1928 until 1985 at a 70-acre plant between Sixth and 11th streets and Stanford Avenue and ...