The Sheldon, designed by the noted 1904 World’s Fair architect Louis C. Spiering, was built in 1912 as the home of the Ethical Society of St. Louis. Musicians and public speakers throughout the years have enjoyed the perfect acoustics of The Sheldon Concert Hall, earning The Sheldon its reputation as "The Carnegie Hall of St. Louis." Well-known singers and ensembles have performed at The Sheldon, and speakers such as Margaret Mead, Thurgood Marshall and Martha Gellhorn have spoken from its stage. The St. Louis Chapter of the League of Women Voters was founded in The Sheldon’s Green Room.