Catalog of insulators and electrical equipment from Canadian Ohio Brass dated 1954, revised 1958. Around 100 pages, thin semi-hard cover. Not in the greatest of shapes but then neither am I as it's close to my age at 60 years old. The binding is starting to fray. It doesn't appear this was a high quality production book, just a tool. Has line drawings and a few photos from a pin type signal all the way through suspensions and tower equipment. $15 and can deliver to Springfield or arrange actual postage as extra. Thanks for looking.