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1929 Navajo Bridge spanning Marble Canyon
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1929 Navajo Bridge spanning Marble Canyon
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A discussion of certain Colorado River problems
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Abby, Kathy And Peter Holcombe Oral History, Part 1/2
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Abby, Kathy And Peter Holcombe Oral History, Part 2/2
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Algonkian wedge and the Colorado River
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Algonkian wedge diabase intrusion
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Ariz. Glen Canyon Dam Powerhouse and Butterfly Valves.
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Ariz. Glen Canyon Dam, 4 valves open.
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Arizona - Glen Canyon Dam & Powerhouse from water level.
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Barbara Rigg. (Washing cup and spoon in the river)
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Bass Trail rapids
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Bass Trail-- Bend in river
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Boat crossing the Colorado River
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Cable crossing river
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Cliffs along San Juan River (constructed title)
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Colorado River Storage Project
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