This circa 1950s card shows the famous Chicago, Burlington & Quincy Railroad's Zephyrs passing between the Twin Cities and Chicago. Motive power is supplied by EMD's E5A & B units. The view from the dome cars must have been spectacular.
For more information on the Burlington's Twin Cities Zephyrs, click here:
http://en.wikipedia.org/wiki/Twin_Cities_Zephyr
