C&NW GP7 #1518, THE first GP, at Mitchell Yard, built 10//49 as EMDX #922, renumbered EMDX #100, to C&NW GP7R #4311 11//72, repainted to original C&NW scheme and road number (C&NW 1518) at California Ave. Shops, Chicago, 8//86; donated to Illinois Railway Museum, Union |