By David Doyle
The M7 Howitzer Motor Carriage, dubbed the Priest, was the most successful and widely used example of American self-propelled artillery during WWII.
Examples continued to be used by the U.S. Army during the Korean war, and beyond, even serving Allied countries into the 1970s.
There are ample good pictures as well as captions that give the helpful information. If you are interested in the detail of different variations of design then these are pointed out in the captions.
Great book, really informative