1958 National Geographic Map of the Monuments & Shrines of the US N997

This original 2.5 x 3' map comes folded to in a 7 x 10" size so that it would fit neatly into the magazine of the time.  It is dated 1958 and was published in the National Geographic.  The map features the United States & Canada of 1958 and focuses on the National Monuments and Shrines of the land. Nice historical map.