 Epstein served as the team leader for Olympian Gertrude Ederle, who learned to swim at the Women’s Swimming Association.In 1926 Ederle became the first woman to swim the English Channel beating the men’s time by over two hours.Epstein served as manager of the U.S. Women's Olympic Swimming Team for the 1920, 1924, and 1928 Olympic Games, and became well known as a spokesperson for female athletes.