topic

• Railroads2
• Locks (Hydraulic engineering)1

name

collection

• Robert N. Dennis collection of stereoscopic views3

place

• Erie Canal (N.Y.)3
• Lockport (N.Y.)3
• New York (State)3

genre

• Photographs3
• Stereographs3

division

• Wallach Division: Photography Collection3

type

• still image3