No, I haven't found any more missing songs. Yay! Actually, I've been busy trying to identify the uncredited background singers on a large number of songs. Betty Everett's 1964 hit It's In His Kiss featured the Opals, an East Chicago trio including Rose Addison, Myra Tillison and Rose "Tootsie" Jackson. The Opals released four singles, 1962-65. None of them charted. Here is their first one, Hop, Skip & Jump: