topic

• Railroad cuts3
• Railroad tracks2
• Railroad mail service1

name

• Bonine, R. A22
• Pennsylvania Railroad22

collection

• Robert N. Dennis collection of stereoscopic views22

place

• Allegheny Mountains22
• Pennsylvania22
• Horseshoe Curve National Historic Landmark (Pa.)14
• Kittanning Point (Pa.)5

genre

• Photographs22
• Stereographs22

publisher

division

• Wallach Division: Photography Collection22

type

• still image22