Pernell Elven Roberts Jr. (May 18, 1928 – January 24, 2010) was an American stage, film, and television actor, activist, and singer. In addition to guest-starring in over 60 television series, he was best known for his roles as Ben Cartwright's eldest son Adam Cartwright on the Western television series Bonanza (1959–1965), and as chief surgeon Dr. John McIntyre, the title character on Trapper John, M.D. (1979–1986). Roberts was also known for his lifelong activism, which included participation in the Selma to Montgomery marches in 1965 and pressuring NBC to refrain from hiring White people to portray minority characters. Early life Roberts was born in 1928 in Waycross, Georgia, the only child of Pernell Elven Roberts Sr., a Dr Pepper salesman, and Minnie (Betty) Myrtle Morgan Roberts. During his high-school years, Pernell played the horn, acted in school and church plays, and sang in local USO shows. He attended, but did not graduate from, Georgia Tech. Enlisting in 1946, he served for two years in the United States Marine Corps. He played the tuba and horn in the Marine Corps Band, and he was also skilled at playing the sousaphone and percussion. He later attended, also without graduating, the University of Maryland, where he had his first exposure to acting in classical theatre. He appeared in four productions while a student, including Othello and Antigone, but left school to act in summer stock. In 1949, he made his professional stage debut with Moss Hart and Kitty Carlisle in The Man Who Came to Dinner at the Olney Theatre in Olney, Maryland. Later, he spent eight weeks at the Bryn Mawr College Theatre in Philadelphia, portraying Dan in Emlyn Williams' Night Must Fall and Alfred Doolittle in Bernard Shaw's Pygmalion. In 1952, Roberts moved to New York City, where he appeared first off-Broadway in one-act operas and ballets with the North American Lyric Theatre, with the Shakespearewrights, at the Equity Library Theatre, and later on Broadway with performances in Tonight in Samarkand (also in Washington, DC), The Lovers opposite Joanne Woodward, and A Clearing in the Woods with Robert Culp and Kim Stanley. He won a Drama Desk Award in 1955 for his performance in an off-Broadway rendition of Macbeth, which was followed by the role of Mercutio in Romeo and Juliet. He performed in Twelfth Night, The Merchant of Venice, Dr. Faustus, and The Taming of the Shrew at the