Handwriting and other details have been reported based on the notes of David Berger, Andrew Homzy, Dr. Theodore Hudson, Walter van de Leur, Wayne Shirley, and Dr. Mark Tucker.
Statement of responsibility taken from "Popular Music, 1920-1979," Nat Shapiro. -- from the Gershwin opera "Porgy and Bess." published in 1935, Gershwin Publishing Corp./Chappell & Co., Inc. -- introduced by John Bubbles. -- sung by Sammy Davis, Jr. in the 1959 film version.
'Tain't necessarily so is contained in one folder consisting of 1 six page piano vocal score in bb minor concert, -- in ink -- in unidentified hand.
Piano vocal score lyrics begin "It ain't necessarily so....the things that yo' li'ble to read in the Bible ..." -- from the Duke Ellington Library.