John Charles Daly
Daly's first foray into television was as a panelist on the game show "Celebrity Time". This led to a job in 1950 as the host and moderator on a new panel show produced by Goodson–Todman, "What's My Line?" The show lasted 17 years with Daly hosting all but four episodes of the weekly series.
What's My Line?
At least by episode #034 (January 21, 1951), the show moved to CBS Studio 59 (Mansfield Theatre, later renamed the Brooks Atkinson Theatre in 1960, 256 W. 47th St., NY), and stayed there until Episode #516, June 5, 1960. Meanwhile, the concurrent 1952–1953 Radio edition, at least during the CBS run, was heard live from CBS Studio Building 22 (49 E. 52nd St., NY).