Fiat Allis HD-41

Here's a nice History Book of Allis-Chalmers . From its' beginnings , to the end. Author Norm Swinford

Contains the early history from 1847 through 1982 .

The AC HD-41 was built from 1970-'74 ; 1900+ dozers built. 524 Hp.

The Fiat Allis HD-41B was built from '74-'82 ; 764 units.

The book contains all model and serial numbers, for the Allis Chalmers period and some for the Fiat Allis time.

The best reference for Allis Chalmers /Fiat Allis I've found .

Fiat Allis HD-41