Comprehensive Guide to MTH Supplement #1 brings our previous 5 books, MTH Premier Engines, MTH Railking Engines, MTH Premier Rolling Stock Volumes I & II and MTH Passenger Cars up to Date. Included are all items thru the 2015 Ready to Run Catalog. Items are listed by type and MTH product numbers. Includes photos, Item Description, features, curves required to operate, dimensions and the catalog the item first appeared in.