This CD book contains George Melvin's exceptional series on EMD's GP40, the first Geep powered with the 645 engine. It documents the GP40's use by original owners and many of their subsequent owners and provides a photographic record of these engines. George also covers the history of the development of EMD Geeps as well as providing background on each road's locomotive purchasing records that led up to their acquisition of the GP40. You'll find photos of GP40s in use by all of its American, Canadian and Mexican buyers. The GP40-2, as well as special variations, such as the GP40P and GP40X are also covered as are some of the rebuilds such as the GP40E and GP40M. CD contains 212 photos, of which 135 are in color. This CD book is a valuable research tool for both diesel modelers and railfans alike. Presented in PDF format (Adobe® Reader® 5.0 or later required), the text is fully searchable, and all of the high-resolution photos can be zoomed in on for close examination of every detail...something not possible with a printed version. Because the images are 300 dpi rather than the more common 96 dpi, readers can get an extremely close look at fine details. Pages can be printed for personal use. The 116-page series was first published in Model Railroading magazine between August 2000 and September 2002.