Atlas Custom Line King Size Plan Book HO Railroads You Can Build Armstrong 1966

The product is the "Atlas Custom Line King Size Plan Book HO Railroads You Can Build" by John H Armstrong. Published in 1966, this vintage paperback book measures 17 inches in length and 11 inches in width. It is a nonfiction how-to guide with 36 pages featuring diagrams, focusing on building model HO scale railroads. The book, manufactured in the United States, caters to hobbyists and enthusiasts interested in trains and railways from the 1960s era.