Yellowstone national park 6 to 8% increase attendance in 1972 expected other facts, figures. pic Post AP 27, 1972 p.28 Braille signs erected in park and nature trails. RMN My 27, 1972 p.150 The long read to Yellowstone - described in 1876. Post Empire AP 30, 1972 p.20,22 Brief history. Westways v.64 #5 My 1972 p.31-36, 86 Undeveloped park areas open to more visitors in 1972. Post Roundup My 21, 1972 p.15
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