Worked briefly as an apprentice with the Atlantic Coastline Railroad after graduating from high school
Enlisted in the US Marine Corps; served two years as a musician with the Marine Corps band
Made professional stage debut with Moss Hart and Kitty Carlisle in "The Man Who Came to Dinner" at the Olney Theatre in Maryland
Joined the newly formed Arena Stage in Washington, DC, where he performed in more than a dozen plays
Worked with several off-Broadway theatres in New York, including the American Lyric Theatre and the Equity Library Theatre
Had roles in "Twelfth Night" and "The Merchant of Venice" with New York's Shakespeare Theatre Company
Made Broadway debut in "Tonight in Samarkand"
Won a Drama Desk Award for his performance in the off-Broadway play, "Macbeth"
Made feature film debut with a sizable supporting role in "Desire Under the Elms"
Played stalwart Adam Cartwright on NBC's Western series, "Bonanza"; left after the sixth season due to disagreements with the writers and a desire to return to theatre
Played the title role in the CBS-TV series, "Trapper John M.D."; earned an Emmy nomination for Best Actor in 1981
Co-starred with Milla Jovovich in the TV movie, "The Night Train to Kathmandu"
Hosted the TV series, "FBI: The Untold Stories"
Final TV appearance was on an episode of CBS' "Diagnosis Murder"