The following series of shots show various aspects of the harvest, from the men operating the bulldozer-drawn, powered combine, the grain trucks waiting their turn, a farmer taking a break in the shade of a grain truck, and grain being delivered to the elevator or silo. The Chevrolet grain truck shown in the field would indicate these photos were taken no earlier than 1947.
The next photo came from the Vern Carstens estate, Reardan, WA. It is probably dated late 1940s to early 1950s although the grain truck is much older. This is a crop out of a color slide which hasn't aged well.
The next photo is a color slide from another estate. Location may be the eastern Palouse, probably taken in the early-to-mid-1960's.