It is a paperback book published by Lionel in the United States.
Lionel O and O27 Trains Collector's Guide History Archives / Book + Values
Operating O and O-27 Trains Comp Guide Lionel M. Klein & B Greenberg 1976 NICE
Operating O and O-27 Trains Comprehensive Guide Lionel Trains MDK Inc. 1995 K-1
Operating O and O-27 Trains Comprehensive Guide Lionel Trains Book
Vintage Collectible Original 1958 Lionel Trains Catalog "O27, SUPER O and HO"
