http://www.drgw.net/gallery/main.php http://www.drgw.net/gallery/v/DRGWDieselContainer/F7s/DRGW5691/drgw_5691_denver_co_30_jul_1950_000.jpg.html 43012 D&RGW F7 5691 (and likely 5692, 5693, and 5694) in Denver, CO, on 30-Jul-1950. Photographer unknown.