The Conrady Collection was donated by its collector, Denis A. Conrady, in September 2009. It contains approximately 2,200 specimens, including popular sheet music and barbershop quartet sheet music. Coverage is mainly from the 1920s through the 1970s, but with the greatest concentration in the 1940s and 1950s. The style of music is varied as are the artists. Most of the music has cover art.