American Singing Groups: A History, From 1940 to Today
American Singing Groups: A History, From 1940 to Today,America's Greatest Hits 1940: First Chart / Var,Marian Anderson and the Easter Sunday Concert, April 9, 1939 – Rediscovering Black History,African American Music in 1920-1940 – Black Music Scholar,1940s musicians hi-res stock photography and images - Alamy,