What's My Line? (1968) Bennett Cerf is your Mystery Guest

What's My Line? Peter Gabel as Mystery Guest

What's My Line? - Jonathan Cerf & Peter Gabel; Robert Morse; PANEL: Pamela Tiffin (Mar 12, 1967)

What's My Line (1965) (Johnny Olson Hilarious Mystery Guest Segment)

Bennett Cerf on What's My Line: An Oral History (Part One)

Top 10 Pranks of 2019 | Best of Just For Laughs Gags

What's My Line? - Synd. Episode 6, Bennett Cerf Returns (Sept. 16, 1968)

Bennett Cerf Documentary - Hollywood Walk of Fame

What's My Line? - "Mama" Cass Elliot (1970)

Tom Hanks Impersonating Everyone (Funny Moments)

What's My Line? - Richard Kollmar [Dorothy Kilgallen's husband!]; Garry Moore (Nov 20, 1955)

Fred Allen's WIFE is the mystery guest?! - 1955 What's My Line? | BUZZR

What's My Line? - Walt Disney; Jerry Lewis [panel] (Nov 11, 1956)

What's My Line?-Bennett Cerf, John Daly, Arlene Francis TV News Obituaries

Salvador Dali on "What's My Line?"

What's My Line? - Frank Lloyd Wright; Liberace; Peter Lawford & Paul Winchell [panel] (Jun 3, 1956)

Groucho Marx - Mystery Guest on What's My Line?

The final What's My Line? 1967 - John Daly as Mystery Guest

What's My Line? June 1, 1958: Best Contestant Ever

A SPOOKY SURPRISE from VINCENT PRICE! - What's My Line?| BUZZR

What's My Line? - Bill Cullen (1969)