Chicago and Northwestern Railroad. C & NW Railroad Winter Vest for Railroad Conductor's Uniform. Material: textile, metal. Size: 44" W, x 19 1/2" L. Description: black, wool serge front with 6 silver-tone, shanked metal buttons with stamped: "C&NW" in raised letters - 4 pockets, 2 on each side - black rayon-type material for back - tan cotton lining.