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airpicts: UP 4004 "Big Boy" on display at Cheyenne Holliday Park
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airpicts: UP 4004 "Big Boy" tender view
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airpicts: UP 4004 "Big Boy" view towards front
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airpicts: UP 4004 "Big Boy" cab view
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airpicts: UP 4004 "Big Boy" valve gear closeup
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airpicts: UP 4004 "Big Boy" nose detail
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airpicts: UP 4004 "Big Boy" nose view
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airpicts: UP 4004 "Big Boy" on display at Cheyenne Holliday Park
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airpicts: Enjoying the "Big Boy" on the park bench
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airpicts: UP 4005 "Big Boy" shield close up
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airpicts: UP 4005 "Big Boy" at Fortney Transportation Museum in Denver
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airpicts: UP 4005 - peer into the Fireman's side
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airpicts: UP 4005 "Big Boy" cab view
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airpicts: UP 4005 "Big Boy" at Fortney Transportation Museum in Denver