Louis Armstrong "You Don't Learn That In School/I Believe" 1947 RCA 20-2240
Louis Armstrong "Back O'Town Blues" 1946 10" 78RPM RCA Victor 20-1912. Label: RCA Victor 20-1912. Format: Shellac 10" 78 RPM. Then two cardboard squares are placed on each side of the records, making a sandwich, then taped together.