Dr. Terry Sharrer, curator; a photo of the Reliance Purifier manufactured by Edward P. Allis Company, Milwaukee, Wisconsin, at left; Allis Gray Roller Mill made by Allis Company at right
Roscoe Melvin Robertson and sons at the Ewing Mill in the summer of 1937; left to right: Dick, Buck, and Joe; photograph taken with a Rolliflex 6x6 camera