Here is the Call Registry Card for my Aunt Juliet, the impersonator. On it she lists the broad range of nationalities for the characters she could play including her hometown Bronx imitation.
Registry Cards were handed out by performers as promotional and marketing tools. They were a quick and easy, short form resume that she would distribute to booking agents, theater managers or anyone looking to hire a particular type of performer. I would estimate that this card was from around 1933 when Juliet had moved away from the Vaudeville Circuits and was doing mostly musical theater and radio.
Last Spring I showed this card to a friend who is a historian and early entertainment expert whose immediate response upon seeing it was " Wow! I can't believe she was on the Goldbergs" referring to the radio show listed at the bottom of the card. At that time I was unfamiliar with this radio show. That evening when I got home he had sent me the link to the trailer for a new documentary that was set to come out a few months later entitled "Yoo Hoo Mrs.Goldberg" all about the Goldbergs. The movie came out early in the summer I saw it opening night, loved it and am still blown away by this strange and unlikely time lapse coincidence.