I note with interest yourquery about the book "Full Steam Ahead" written by two people - David.Erb & Eldon.Brumbaugh who was a Head design engineer for Case Co. An EXCELLENT book with 341 pages, hard cover, size 11" x 9", heaps of factory photo's etc etc, and covers the Company and it's machines from 1842 - 1955. The authurs had acces to all company archives for this publication. A MUST FOR ALL "CASE" FANS, there is also volume 2 covering from 1956 to 1994, same size with 208 pages by Tom Stonehouse and Eldon Brumbaugh.
I hope that this helps - GO GET IT !!!
Alan T. Lewis