Water polo on rubber horses at Palm spring california . Water polo with rubber horses and woodedn mallets , is the latest sport for women at the seaside resorts in California . the game causes excitement steady balance being required for competitors to remain on their floating horses . A game of water polo in progress at the El Mirador Springs Pool , Palm Springs , California . 24 February 1932 30s, 30's, 1930s, 1930's, thirties, nineteen thirties