June Lockhart, Angela Cartwright, Marta Kristen, Bill Mumy, and Judy the Chimpanzee in Lost in Space (1965)

Jonathan Harris, Bill Mumy, and Guy Williams in Lost in Space (1965)

Bill Mumy and Robby the Robot in Lost in Space (1965)

Jonathan Harris and Bill Mumy in Lost in Space (1965)

June Lockhart, Angela Cartwright, Mark Goddard, Marta Kristen, and Bill Mumy in Lost in Space (1965)

Bill Mumy and Albert Salmi in Lost in Space (1965)

Angela Cartwright and Bill Mumy in Lost in Space (1965)

June Lockhart, Angela Cartwright, Mark Goddard, Jonathan Harris, Marta Kristen, Bill Mumy, and Guy Williams in Lost in Space (1965)

Angela Cartwright, Jonathan Harris, Bill Mumy, and James Westerfield in Lost in Space (1965)

Angela Cartwright, Mark Goddard, Marta Kristen, and Bill Mumy in Lost in Space (1965)

Jonathan Harris, Don Matheson, and Bill Mumy in Lost in Space (1965)

Mark Goddard, Jonathan Harris, Bill Mumy, and Guy Williams in Lost in Space (1965)

Brigitte Bardot and Bill Mumy in Dear Brigitte (1965)

Dustin Hoffman, Steve McQueen, Don Gordon, and Bill Mumy in Papillon (1973)

James Stewart and Bill Mumy in Dear Brigitte (1965)

Jack Klugman and Bill Mumy in The Twilight Zone (1959)

Bobby Diamond and Bill Mumy in The Twilight Zone (1959)

Bruce Boxleitner, Mira Furlan, and Bill Mumy in Babylon 5 (1993)

Mira Furlan and Bill Mumy in Babylon 5 (1993)

Mira Furlan, Jason Carter, and Bill Mumy in Babylon 5 (1993)

Peter Jurasik and Bill Mumy in Babylon 5 (1993)

Bill Mumy at an event for Cheaper by the Dozen (2003)

Fabian, Robert Biheller, Cindy Carol, and Bill Mumy in Dear Brigitte (1965)

James Stewart, Fabian, Cindy Carol, Glynis Johns, and Bill Mumy in Dear Brigitte (1965)

Brigitte Bardot, James Stewart, and Bill Mumy in Dear Brigitte (1965)

Bruce Boxleitner, Jeff Conaway, Mira Furlan, Richard Biggs, Jason Carter, Claudia Christian, Jerry Doyle, Stephen Furst, Peter Jurasik, Andreas Katsulas, Bill Mumy, and Patricia Tallman in Babylon 5 (1993)

Mira Furlan, Peter Jurasik, and Bill Mumy in Babylon 5 (1993)