Peter joined the Air Force hoping to see action and adventure, but was severely disappointed when he was stationed stateside for the entire term of his enlistment.
Peter won the Minnesota State Hurdles Competition in his last two years of high school.
Peter became a member of the Musicians' Union at the age of 15.
Peter did a tv commercial for Metropolitan Mortgage in 2000.
Peter narrated a documentary, The Mysterious Monsters (1976), about popular monster stories such as the Loch Ness Monster and Bigfoot.
Peter is a member of the Phi Kappa Psi fraternity.
Peter has been married to his wife, Joan Endress, since December 13, 1950.
Peter is left-handed.
Peter was nominated for the Golden Globe for Best TV Actor - Male in 1969 and Best TV Actor - Drama in 1970. He won the Golden Globe in 1971 for Best TV Actor - Drama.
Graves served in the U.S. Air Force for two years.
Peter and his wife, Joan, have three children, Kelly, Claudia, and Amanda.
Peter's latest project involved providing narration for the 2006 video game 'Darkstar.'
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