Today in History, April 11, 1938:
The Society for the Preservation and Encouragement of Barbershop Quartet Singing in America is founded by Owen Clifton Cash, Rupert I. Hall, and 24 other men at the Tulsa Club in Tulsa, OK. (Encyclopedia Britannica). For an example of Barbershop Quartet Harmonizing, also my favorite Beatles song.
Mark Loves History! 