topic

• Rock formations4
• Parks3
• Canyons2
• Tourism2
• Camping1
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name

• Continent Stereoscopic Company7
• White House (Washington, D.C.)2

collection

• Robert N. Dennis collection of stereoscopic views40

place

• Colorado14
• New York (State)9
• Pennsylvania8
• New York (N.Y.)6
• Monument (Colo.)4
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genre

• Photographs40
• Stereographs40

publisher

division

• Wallach Division: Photography Collection40

type