Three American cowgirls, from left, Lucyle Roberts (1909 - 1995), Alice Greenough (1902 - 1995), and Reine Shelton (1902 - 1979), sit on haybales, polishing and comparing boots in preparation for a charity rodeo in Madison Square Garden, New York, New York, October 9, 1933. (Photo by FPG/Getty Images) 人民 小群人 白种人种族 Polishing Boots Before The Rodeo
A man polishing a propellor blade in a factory circa 1940's. (Photo by FPG/Getty Images) 1940-1949 垂直 档案 Polishing A Propellor
A demonstration of an ancient Peruvian technique for polishing large objects. 专业知识 挂 团队协作 Peruvian Polishers