Yes, there is a blue book for tractors. It's official name is "The Official Tractor Blue Book."It is published by Primedia. Their phone number is 800-654-6776 and their email address is primediabooks.com. I bought the 2005 edition (don't remember the cost) from Amazon.com and it covers models from 1939 to 2004. Information includes; Approximate Retail Price New, Used trade-in value (average/high), Used retail (average/high), engine make, # of cylinders, cu-in.,# of speeds, pto horsepower, approximate shipping weight and whether the model has a cab or not. I have found that it has some holes in it but all in all, it is a very useful reference. Hope this helps. Magrred