For your consideration, here is a Vintage 1975 Yellowstone National Park United Airlines Adventure Tourist Guide, Foldout, effective dates May 3 - Oct 6, 1975, 12 pages.  It has a little wear on the covers.  It will be mailed in a bubble mailer with foam core stiffeners.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (527.909j-.5hc)

With Information on Attractions, Yellowstone Lake, Hotels, Cabins, Scenicoach Expeditions, Airline Fares, and a Map