I am reading the SP Historic Diesels book, vol 15, I think. It is Espee GP40s and GP60s. Inside the very first page it states that there will be three or four more in this series. Anyone else see that? I have all of the series so far. It is very good for photos of engines to model.
Yes Flash, Joe has several more volumes planned. Joe's very meticulous (and a heckuva nice guy!), so rest assured, the data and photos in each are top-notch. They're definite must-haves for the SP modeler. The next volume should be very good, so start saving your pennies.