I read somewhere that it was after an article in "Life" or "Look" or some such magazine where they titled the article "Gracie, a turned on girl" that everyone started to refer to her as Gracie and that it annoyed her. Who knows? maybe it did, i know it would annoy me. If i happened to have aname that was as original and cool as Grace Slick then i would be mighty mad if people started calling me Gracie.
I have always thought that it is amazing to have such a great rock n roll name and it was not made up, like say, Johnny Rotten or Courtney Love, Grace is the original rock n roll lady with the best name