Photograph of the Belle Fourche Irrigation project in [South Dakota, USA] in the early 20th century. Shows the canal.

Photograph of the Belle Fourche Irrigation project in [South Dakota, USA] in the early 20th century. Shows men using horses and ditch diggers to create the canal.

Photograph of a dam and canal which is part of an irrigation system in Calgary, Canada in the early/mid 20th century.

Photograph of an irrigation project in Calgary, Canada showing the deep cut number 2 of the main canal with a man standing in the middle of the in the early 20th century.

Photograph of an irrigation project in Calgary, Canada showing the elevating grade machines operated by steam digging the canal in the early 20th century.

Photograph of men with horse drawn wagons working on the main canal elevating grades as part of an irrigation project in Calgary in the early 20th century.

Photograph of an irrigation project in Calgary, Canada showing the main canal five miles from the headgate in the early 20th century.

Photograph of a section of the main canal, two miles away from the headgate as part of an irrigation system in Calgary, Alberta, Canada in the late 19th or early 20th century. 'BO. ENG. VICT' has been written in the lower left-hand corner of the photograph.

Photograph of a spillway or safety valve in the main canal in the Calgary irrigation project in the early 20th century.

Photograph of a man in a horse and buggy driving across a highway bridge over an empty canal that is used for irrigation in Calgary, Alberta, Canada in the late 19th or early 20th century.