It is important for the reader to understand that by the mid-1970s, although there were originally half-dozen or so US manufacturers of diesel locomotives, only General Motors and General Electric were producers, with GE still a minority supplier.
In the book, many examples of those locomotives built by the non-GM manufacturers are displayed, along with a preponderance of vintage GMs manufactured by the early 1970s. The objective is to provide a wide variety of historical equipment in operation. With one exception, the locomotives shown were all in service or stored serviceable.
The following group of portraits originated from a small private collection which was placed on the walls of the Chemistry Department of the Massachusetts Institute of Technology.
This book will prove useful to chemistry researchers, teachers, and students.