Peter Mark Richman (born Marvin Jack Richman; April 16, 1927 – January 14, 2021) was an American actor in films and on television, who was for many years credited as Mark Richman. He appeared in over 30 films and over 130 television series from the 1950s until his retirement in 2011.

Description above from the Wikipedia article Peter Mark Richman, licensed under CC-BY-SA, full list of contributors on Wikipedia.