Nice large 21st edition from 1948. Has stains on outside bottom of pages, as shown in photo. Only one or two stains on inside noted. Did not notice any markings. Binding is in very good condition. Outer top corners of cover slightly dented with some other light wear on cover. A name stamped on two front pages. Over 1190 pages. Neat old photographs. Plenty of information, which may not be current but perhaps worth a read and even glean some insights into how things were done and give them a shot again!!!