Whitewater Canal at Metamora, Indiana.

Whitewater Canal at Metamora, Indiana.

Whitewater Canal at Metamora, Indiana.

Bridge covering Whitewater Canal, Metamora, Indiana.

Black and white photograph of the Maybees Waste Weir, located on the Erie Canal section of the New York State Barge Canal. Taken by Robert Merrill from the canal bank.

Black and white photograph of a grader, a machine used to level ground, by the Erie Canal. Two wheeled vehicles, pulled by horses, are visible in the image.

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 ditch, Eerie Canal.

Black and white photograph of the construction of an abutment for William's Bridge on the Erie Canal. Three men are visible on the top of the structure.

Black and white photograph of excavation near Maybees Waste Weir, Erie Canal.

Black and white photograph with closer view of Webb's grader near the Erie Canal.

Black and white photograph of construction of the north end of Culvert 109, New York State Canal System.