75 years ago, on February 2, 1950, the first mystery guest was revealed on the premiere episode of What’s My Line? Do you remember who it was? … Times up, it was New York Yankees shortstop ...

What’s My Line? had been on the air for nearly 25 years as one of the producer Goodson Todman’s most popular panel game shows, in which a celebrity panel tried to guess the occupation of a guest.