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Joan Alderson-rosazza is a swimmer who competes internationally for the United States. Her last result is the 2nd place for the women's 4x100 m freestyle during the Olympic Games 1956. She competes in 100 m freestyle and 4x100 m freestyle.
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| Event | Discipline | Pos | Date |
|---|---|---|---|
Olympic Games |
Women's 4x100 m freestyle | 2 | 06/12/1956 |
Olympic Games |
Women's 100 m freestyle | 4 | 01/12/1956 |