Early years Mitchell recalled his first days in New York City attending acting school, saying, "When I got to New York I had never ridden in an elevator or used a telephone". To make ends meet, he held many jobs, including theatre ushering, mail clerking, and washing dishes in restaurants. He was an
NBC page at
NBC Radio City with then-unknown fellow actor
Gregory Peck. After two years of trying and still hoping to break into acting, Mitchell wrote dozens of letters to actors, agents, and producers in 1939. He received no response from the effort. He said, "I was bitter, mad at everyone. I sat down and wrote a letter to
Alfred Lunt. It was the world's worst letter. I hate to think about it. I said I was a better actor than he was, but I was never going to get a chance to prove it". Lunt answered Mitchell and offered him an audition. Mitchell, realizing his impudence, apologized for having written the letter. Lunt's wife, actress
Lynn Fontanne, told him, "Don't worry about what you've done. Acting is your life's work, and you're not only going to be a good actor, but you're [also] going to be a great actor". His agent, Ronald Leif, described Mitchell's ability, saying, "A true actor isn't tagged. He isn't a heavy, a comic or a juvenile – he can assume any personality the role demands and play it convincingly. Such a man is Cameron Mitchell". In 1941, he appeared again on Broadway in
The Trojan Women.
Radio career Mitchell also worked in radio throughout his career, both acting and announcing. In 1942, Mitchell was both station chief announcer and sports announcer at
WSRR AM in Stamford, Connecticut. He was reported to have joined the Army Air Forces in July, 1943, and would be stationed at Jefferson Barracks, Missouri, where he was scheduled to host a weekly radio show on
KFEQ AM in St. Joseph, Missouri. He became an Army Air Corps bombardier, instead. After World War II, Mitchell continued to act in radio dramas. He starred in the CBS daytime radio show
Grand Central Station on January 21, 1950, in the episode "Lost and Found". Each week, the show featured an actor who was then currently appearing on Broadway in New York City.
Transition to film Mitchell's film career began in 1945 as a contract actor at Metro-Goldwyn-Mayer (MGM) for three years, with minor roles in films, including brief appearances in
What Next, Corporal Hargrove? and
They Were Expendable (1945), starring
John Wayne and
Robert Montgomery. He was featured with
Lana Turner and
Spencer Tracy in
Cass Timberlane, and with
Wallace Beery in
The Mighty McGurk (both 1947). He concluded his MGM period acting in two
Clark Gable films,
Homecoming and
Command Decision (both 1948). Mitchell moved to Columbia Pictures and had his first movie-star role as a prizefighter in the
film noir Leather Gloves (1948). He appeared as a deep-sea diver in ''
Smuggler's Gold'' (1951). He also starred in Monogram Pictures'
Flight To Mars (1951) . Mitchell originated the role of Happy Loman in
Arthur Miller's
Death of a Salesman (1949) on Broadway. His performance earned him a 1949
Theatre World Award. After its closing, he appeared again in the Broadway production of
Southern Exposure (1950). In 1975–1976, he portrayed Jeremiah Worth in the
Swiss Family Robinson TV series, and had a supporting role opposite
Leo Fong in the Filipino film
Enforcer from Death Row (1976). Mitchell was subsequently featured on an episode of
Bonanza and
ABC's
S.W.A.T.. He guest-starred on the "Landslide" episode of ''
Movin' On'' in 1975. He appeared on
Gene Evans's short-lived ''
Spencer's Pilots on CBS in 1976. Mitchell also had roles in horror films and in many exploitation films, such as The Toolbox Murders (1978), the creature feature The Swarm (1978), the slasher film The Demon (1979), and the slasher film Silent Scream (1980). He appeared again on Broadway in the 1978 production of The November People
, He had a supporting role in the anthology horror films Night Train to Terror (1985) and From a Whisper to a Scream (1987), as well as roles portraying right-wing General Edwin A. Walker in Prince Jack (1985), and as Captain Alex Jansen in Space Mutiny, a 1988 South African science-fiction film that appeared as an "Experiment" in episode 820 of Mystery Science Theater 3000.'' In 1984, he had the role of Duke Kovak in
Partners in Crime. He also appeared in an episode of
Knight Rider, playing the role of criminal Bernie Mitchell. Through the end of the decade, Mitchell appeared in many low-budget,
direct-to-video films, often in roles only lasting a few minutes. His role in these productions led him to be a recurring subject, and later a running gag, on the internet film review show
Best of the Worst. == Aborted sports career ==