| Title: Maintenance Of Frogs and Switches Author: Office of Chief Engineer Access No.: 13309 Publisher: Denver and Rio Grande Railroad Company Edition: 1912 Binding: Paperback Signed: Pages: 32 ISBN: Condition: Good. Light soiling on the covers. Description: 4 x 6.5 inches, maintenance of railroad frogs and switches with tables, diagrams and line drawings. Keywords: Railroad Price: $40 |