Photograph of an egg grading plant in operation in the early 20th century. Four women stand around a machine placing eggs in boxes.

Photograph of the construction of the Belle Fourche irrigation project in Newell, South Dakota, USA in the early 20th century. Shows train cars and earth removal equipment.

Photograph of A. Bristo with his patented feeding manger and Gardiner's Cutter at Whinberry Hill Farm in Wilberfoss, York, England in the early 20th century.

Illustration of a Calillet's monorail device used for 'facilitating transport on rubber estates'. Two men push a trolley with canisters of rubber along a single track through the forest on a rubber plantation in [Malaysia?] 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 a steam shovel and train digging through a deep cut for irrigation purposes in Calgary, Alberta, Canada in the late 19th or early 20th century.

Illustration and description of a cattle spraying machine in the early 20th century.

Photograph of a 'Daylight Tester - an apparatus fitted with electric light and shutters to obviate necessity for a dark room' in the late 19th or early 20th century. Shows a woman and a man standing on either side of a wooden machine holding eggs beneath it with wooden packing crates next to and behind them.

Photograph of men using a machine to press hay in [South Africa] in the early 20th century.

Illustration of a hog spraying machine with text describing how the farmer can set up the machine at the end of his chute and be ready to operate from the early/mid 20th century.