For folks who collect or are planning to sell postwar Lionel, the above publication is probably a must have. I recently looked at it after many years and was surprised to see how much Lionel postwar had been reproduced: steamers, F3's, freight car loads, etc.--you name it and it's probably been reproduced.
The book was written by Joe Algozzini; ed. by Roger Carp; and, published by TCA in 2000. I checked TCA's website last night and didn't see it for sale there, so it may be out of print. Also, if someone knows of a better resource, please chime in. I've been away from the hobby for 10+ years, so it's entirely possible that more has been written on the subject.
The book has numerous photographs depicting original and reproduction items. Should be a valuable resource even if it is 14 years old.