topic

• Dams1
• Railroad tracks1

name

• Henderson, R. S2
• Pennsylvania Railroad1

collection

• Robert N. Dennis collection of stereoscopic views2

place

• Pennsylvania2
• Huntingdon (Pa.)1
• Juniata River (Pa.)1

genre

• Photographs2
• Stereographs2

publisher

• R. S. Henderson & Co2

division

• Wallach Division: Photography Collection2

type