Bridge across Colorado River canyon, near Lees Ferry, Arizona.

Bridge across Little Colorado river at Cameron, Arizona.

Little Colorado River Bridge at Cameron, Arizona.

Black and white photograph of Blackwell's Island Bridge in the East River, New York City. Water damage is visible in the image, which was scanned from the negative.

Black and white photograph of a bridge across the Hudson River at Poughkeepsie, New York. Water damage is visible on the image, which was scanned from the negative.

One side of a double painting on the fore-edge of "The select works of John Bunyan" by George Cheever. When the leaves are fanned one way, a view of Bedford bridge is displayed, when fanned the other way, a view of the town of Bedford, England from…

Black and white photograph of a natural stone arch bridge.

Black and white photograph of five men standing on bank of canal next to a row boat. Some men are holding tools, and a bridge is visible in the background.

Black and white photograph of a Canadian Pacific Railway viaduct in Parry Sound, Ontario. A train can be seen crossing the viaduct.

Black and white lantern slide of the Grand Canal passing under a railway bridge.

Black and white lantern slide of the Grand Canal passing under a railway bridge near the Grand Canal Improvement Board office in Tientsin (Tianjin), China. Boat traffic passes under the bridge.

Black and white lantern slide of heavily laden canal boats on the Grand Canal in Tientsin (Tianjin), China. Several large buildings are visible in the background.