I have a Copacabana souvenir photo with an autographed photo holder from 1948. Found while cleaning out my Grandmothers estate. I can identify Dean Martin, Vivian Blaine and Micheal Durso. Any idea on the other two? One is in the first picture. The other one is in the last picture, in pencil to the right of Dean Martin. Thanks! Also any idea of how to find out how much it's worth?