Chicago golfer Margaret Abbott was the 1st American woman to win a gold medal at the Olympics — but she never knew it. Here’s why.

Margaret Abbott plays in the women’s individual golf event at a course in Compiegne, France during the Olympic Games in 1900. This photo was published in La Vie au Grand Air magazine on Oct. 14, 1900. Abbott played in white clothes and very likely had some red accessories, thus wearing the traditional colors of the Chicago Golf Club. (USGA Museum)