topic

• Geological surveys30
• Government facilities23
• Buildings22
• Canyons20
• Rock formations5
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name

• Bell, William, 1830-191030
• Geographical Surveys West of the 100th Meridian (U.S.)30
• Wheeler, George M. (George Montague), 1842-190530
• United States. Navy Department11
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collection

• Photographs of geological formations and Western landscapes30
• Robert N. Dennis collection of stereoscopic views23

place

• United States30
• West (U.S.)30
• Washington (D.C.)23
• Arizona18
• Grand Canyon (Ariz.)11
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genre

• Photographs53
• Stereographs23

publisher

• War Dept30

division

• Wallach Division: Photography Collection53

type