This is the only copy of the 1976 Person to Person Smithsonian Museum exhibit that I`ve seen. The exhibit covered the time period of 1845 to 1976 and beyond. The most interesting portion of the catalog is 37 pages of reproduced advertisements, covering phones to phone booths.....insulators to telephone poles.....military telegraph and telephones and much more. It must have been a fantastic presentation. The catalog is in near perfect condition. I`m asking $15 and that includes shipping.