11 Library of Congress, Division of Music, Recording Laboratory
AAFS 51 Library of Congress, Division of Music, Recording Laboratory
AAFS 52 Library of Congress, Division of Music, Recording Laboratory
AAFS 53 Library of Congress, Division of Music, Recording Laboratory
AAFS 54 Library of Congress, Division of Music, Recording Laboratory
AAFS 55 Library of Congress, Division of Music, Recording Laboratory