Benny Rubin ( I don't know )

[helloagain]

I have always enjoyed Benny Rubin's appearances on the Jack Benny show, as well as his other work in movies and TV. I know he played many uncredited roles on the Benny show, the best known being the man behind the information counter who doesn't know anything. I don't know much about him, other than what his online biographies tell. I always felt he was very underrated and unappreciated as a performer, usually doing small roles. His name is listed in the cast of the Al Jolson movie 'Go into your Dance', but he is only on screen for a couple seconds. The rest must have hit the cutting room floor. I have one or two short films from about 1930 which feature him as the lead character, so I assume he must have been a headliner at one time. Does anyone know any more about him and his career?