OLD WEST TRAIL Adventure Map 
A guide to RODEOS, POWWOWS and PAGEANTS.
The Old West Trail runs through Montana, Wyoming, Nebraska, North Dakota, and South Dakota. When open, this brochure/map opens to 10-3/4" x 17" and closes to 3-3/4"x9-3/8" as shown in last photo.  Dated 1968 by Old West Trail Foundation.
Not off-the-press perfect but is in good condition.
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