Interior Signal Station on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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Frost work on Mt. Washington.
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