PM Maintenance of Way Standard 1930

Most railroads issued standard drawings detailing track maintenance materials all the way from spikes to camp cars, including roadbed specifications, detailed drawings of various switches, and line-side structures. This Pere Marquette Maintenance-of-way Standards book was issued in 1930. It was the bible for the roadmaster as he kept up the track I those days on heavy traffic and heavy wear-and-tear on track by steam locomotives. This is a 140 page reprint on 8 ½ x 14 paper. This is a MUST for PM Prototype Modelers!