Stanisława Walasiewicz, also known as Stefania Walasiewicz, and Stella Walsh, was a Polish-American track and field athlete, who became a women's Olympic champion in the 100 metres. Born in Poland and raised in the United States, she became an American citizen in 1947. Stanisława Walasiewicz (Poland) set the women's 100 m world record of 11.8 in Poznań, Poland on September 17, 1933. It stood 11 months, until Käthe Krauß's 11.9 on August 11, 1934. Wiki link