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1955 in Park, Hoover, Tree Falling, Needle Cliff, Mammoth, Giant Geyser, Animal
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A Trip Around Yellowstone
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Castle Geyser, Yellowstone Park. 5121
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Castle Geyser, Yellowstone Park. 8803
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Clips from in and around Yellowstone
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Crater of Mud Volcano, Yellowstone Park Wyo.
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Crater of Old Faithful, Yellowstone Park.
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Excelsior Geyser, Yellowstone Park.
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Exchange between William R. Harper and Thomas J. Ryan regarding student and Professor visit to Park, dated July 6, 1898.
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Fish Pot, Hot Springs, Yellowstone Park.
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Fountain Geyser, Yellowstone Park. 6493
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Geysers, Mudpots, and Pools of Mysterious Yellowstone
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Geysers, Yellowstone National Park
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Grotto Geyser, Yellowstone Park. 6533
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Grotto Geyser, Yellowstone Park. 8804
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Letter from Thomas J. Ryan to Capt. James B. Erwin granting additional authority to geological party, dated August 1, 1898.
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Morning Glory Pool
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Mortar Geyser, Yellowstone Park.
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Norris Geyser Basin, Yellowstone Park. 6694
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Norris Geyser Basin, Yellowstone Park. 7239
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Old Faithful Geyser
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Old Faithful Geyser
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Old Faithful Geyser
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