|2009. Wm. K. Walthers, Inc. ISBN 0-941952-80-0. Soft cover without dust jacket. In good condition - front cover is torn two thirds of the way through at the spine and cover is worn, but all pages are intact (although some are a little dog-eared!). Catalogs all of the HO gauge stock sold by Walthers in 2009. A great reference piece for the HO operator.