I wonder also just who owned The Three Stooges name at that time. I don't think C3 Productions was even in business yet then. If I were to guess, I would say it was owned by Columbia/Screen Gems at that time and perhaps if they were even aware of this record at the time, may have figured it just wasn't worth suing over.
Columbia owns the films it produced. It has never owned the intellectual property "The Three Stooges."
"The Three Stooges" was always the property of the act, formalized with the founding of Comedy III in 1959. Norman Maurer Prod. managed the licensing business of Comedy III from 1959 - 1994, and yes, it is believed that Norman did send a "cease and desist" to Epic when that 45rpm came out, but I am not aware of any extant document.