Mark Vogel: Wabash and Nickel Plate Road Signal Rules 1933 Cover
Mark Vogel: Wabash and Nickel Plate Road Signal Rules 1933 page 1
Mark Vogel: Wabash and Nickel Plate Road Signal Rules 1933 page 2
Mark Vogel: Wabash and Nickel Plate Road Signal Rules 1933 page 3