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Yellowstone Association/Yellowstone Institute Winter Wonderland employee Mark Williams skiing on the Lone Star trail;
Jim Peaco;
March 2000
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Yellowstone Association van & fall photo class at Steamboat Point (Sandra Nykerk, instructor);
Jo Suderman;
October 2000
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Yellowstone Association instructor Sandra Nykerk & fall photo class in Hayden Valley;
Jo Suderman;
October 2000
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Yellowstone Association/concessioner Winter Wonderland snowcoach;
Jim Peaco;
February 2001
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