Photograph of two men using a a stone grinder to mill wheat by hand while a young man watches in the background and another man tends to a donkey in the late 19th or early 20th century.

Graph illustrating the growth of wheat at Rothamsted over a period of 13 years with increasing amounts of nitrogenous manure from the early/mid 20th century.

Men harvesting wheat by hand in Richmond, New South Wales, Australia. Image shows two wagons pulled by horses piled high with wheat with two men using pitchforks and two men standing atop the wheat observing in the early 20th century.

Image of a field at Wagga Farm in New South Wales, Australia with harvested stacks of wheat or hay with houses and farm buildings in the background in the early 20th century.

Man sitting on a three-horse drawn harvester harvesting a field of wheat or hay on Wagga Farm, New South Wales, Australia in the early 20th century.

Photograph of men harvesting wheat and hay in the [?] Valley in 1897. The note on the slide also says that all of the wheat and hay was cut with a binder. The image shows a man standing on a horse drawn wagon while another lifts hay up with a pitchfork and two other men add hay to the stack in the background.

Photograph of a Western man sitting in a lean-to in front of a wheat field next to two Egyptian women and a child, with another Egyptian woman standing nearby in the late 19th or early 20th century.

Image of four men standing around a wheat stack in a field. The teacher is gathering some wheat from the stack while the students observe in the early 20th century.

Photograph of a man standing in a field of Macaroni wheat at Hawkesbury Agricultural College, Richmond, New South Wales, Australia in the early 20th century.

Map of the are of land cultivated for wheat in North West Canada in the early 20th century.