topic

• National parks & reserves90
• Parks13
• Canyons8
• Bridge construction2
• Bridges2
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name

• Underwood & Underwood122
• Strohmeyer & Wyman27
• White House (Washington, D.C.)10
• Barker, George, 1844-18941
• Green-Wood Cemetery (New York, N.Y.)1

collection

• Robert N. Dennis collection of stereoscopic views151

place

• Wyoming90
• Yellowstone National Park90
• Colorado35
• Colorado Springs13
• Garden of the Gods (Colorado Springs, Colo.)13
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genre

• Photographs151
• Stereographs151

publisher

division

• Wallach Division: Photography Collection151

type

• still image151