THRESHING IN WASHINGTON STATE

36-56 Advance Separator
A pause for a picture in the mad rush to the next setting. 22 hp. Advance,9xll engine, 36-56 Advance Separator. Fifteen miles north of Prosser, Washington, in the rattle snake hills, 19 07. C. R. Miller, engineer. See Miller's article, Threshing in Washin