Union Pacific Streamliner Traversing the Rockies - Train Track Vintage Postcard

Beautifully preserved postcard featuring the Union Pacific Streamliner traversing the Rocky Mountains

Back of Postcard reads:
" This fine and modern crack train is one of the great many of the Union Pacific railroad's streamliners spanning the country from the Midwest to the Pacific Coast. The Union Pacific provides for the Western Tour Vacations in the summer months, to a number of the well known national parks of the west. "