topic

• Railroad cuts14
• Railroad locomotives2
• Railroad tracks2
• Rock formations1
• Scenic overlooks1

name

• Pennsylvania Railroad19
• Purviance, W. T. (William T.)19
• James S. Earle & Sons4

collection

• Robert N. Dennis collection of stereoscopic views19

place

• Horseshoe Curve National Historic Landmark (Pa.)19
• Pennsylvania19

genre

• Photographs19
• Stereographs19

publisher

division

• Wallach Division: Photography Collection19

type

• still image19