ROWELL HAMMER MILL Brochure. Massey Harris CO., 1928 Colorful brochure promoting Rowell Hammer Mill, Racine, Wisconsin. Quad fold with illustrations print on all sides. Marked on back "Sold by MasseyHarris Co. Measures 3 1/2 X 6 1/8 inches when folded. Endorsements on back dated 1928. Not ripped or torn. Very good condition for age.