Featured in this lot is this Yellowstone National Park 50th anniversary poster circa 1966. The poster features a wonderfully and professionally crafted anniversary that includes images such as: Firing Salute Gun, Fort Yellowstone, July 4, 1916; Temporary Rangers, Mammoth, 1920 with Supt. H.M. Albright; Stephen T. Mather, First N.P.S. Director (1917-29) at the Theodore Roosevelt Arch, 1916; Official Party on top of Mt. Washburn, July 1916, month before passage of N.P.S. Act*; Mammoth Camp "Tent Tops" showing Jupiter Terrace, 1917. Hamilton Curio Store, Old Faithful, 1916; Haynes Park Views, 1898 on parade grounds in front of present Mammoth Hotel. All the pictures are courtesy of Haynes Studio, Inc. The condition of this news poster is good with no obvious signs of damage and in good overall condition. The measurements of this poster are 27" x 19".