Shoemaker Ranch near Folsom, New Mexico: Bone pit main excavation looking north. An automobile is visible in the background.

Shoemaker Ranch near Folsom, New Mexico: Bone pit main excavation looking east down Wild Horse Arroyo

Black and white photograph of a work site in Collingwood, Ontario. Ships are visible in the background.

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

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

Black and white photograph of construction of the south abutment for Watson's Bridge, New York State Canal System.

Black and white photograph of William's Bridge under construction, New York State Canal System. Taken by Robert Merrill from the south.

Black and white photograph of south culvert 103, New York State Canal System.

Black and white photograph of excavation of berme 5160, New York State Canal System.

Black and white photograph of T.P. bank 5135, Shelby Basin, New York State Canal System. Taken by Robert Merrill near Medina, New York. A few men can be seen in the distance working on a pathway.

Black and white photograph of culvert #101, New York State Canal System. Taken by Robert Merrill from north.

Black and white photograph of partially buried skeletons in Pompeii, Italy.