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The last appearance of regular panelist Hal Bloc who was fired from the show later that week. Hal Bloc's last appearance on 'What's My Line?' was with longtime fellow panelists Dorothy Kilgallen, Steve Allen and Arlene Francis who begin the show by guessing the identity of a man who's a professional turtle trapper, a man who makes saddles, a man who's a Yo-Yo demonstrator, as well as, the identity of celebrity mystery challenger Jane Froman.