Mary Harriman Rumsey was an American social activist and government official. She was the founder of The Junior League for the Promotion of Settlement Movements, later known as the Junior League of the City of New York of the Association of Junior Leagues International Inc, and served as Chair of the Consumer Advisory Board of the National Recovery Administration. Mary was the daughter of railroad magnate E.H. Harriman and sister to W. Averell Harriman, former New York State Governor and United States Diplomat. In 2015 she was posthumously inducted into the National Women's Hall of Fame.

The Association of Junior Leagues International, Inc. is a private, nonprofit educational women's volunteer organization aimed at improving communities and the social, cultural, and political fabric of civil society. With 295 Junior League chapters in the United States, Canada, Mexico, and the United Kingdom as of 2023, it is one of the oldest and largest of its kind. Members engage in developing civic leadership skills, fundraising, and volunteering on JL committees to support partner community organizations related to foster children, domestic violence, human trafficking, illiteracy, city beautification, and other issues. Its mission is to advance women's leadership through meaningful community impact through volunteer action, collaboration, and training.