Question: On what network did an American actress portray Shirley Partridge, along with David Cassidy, beginning in 1970?

full_context: Document 1: Dorothy Emmerson: Dorothy Emmerson is an American actress and singer who was active in the New York City theatre scene during the 1960s and 1970s. She first appeared in the ensembles of the original 1963 Vernon Duke musical "Zenda" and the 1965 Lincoln Center Revival of Rodgers and Hammerstein's "Carousel". She next starred for a couple years in the long running Off-Broadway production "The Mad Show" at the New Theater. In 1968 she portrayed her first featured role on Broadway, Eileen Higby in the original production of Paul Nassau and Oscar Brand's "The Education of H*Y*M*A*N K*A*P*L*A*N". This was followed by her portrayal of Rita in the original production of John Sebastian's "Jimmy Shine" in 1968-1969, where she shared the stage with Dustin Hoffman and Rue McClanahan.
Document 2: The Partridge Family: The Partridge Family is an American musical-sitcom starring Shirley Jones and featuring David Cassidy. Jones played a widowed mother, and Cassidy played the oldest of her five children who embarked on a music career. It ran from September 25, 1970, until March 23, 1974, on the ABC network as part of a Friday-night lineup, and had subsequent runs in syndication. The family was loosely based on the real-life musical family The Cowsills, a popular band in the late 1960s and early 1970s.
Document 3: Ann-Margret: Ann-Margret (born Ann-Margret Olsson; April 28, 1941) is a Swedish-American actress, singer, and dancer. As an actress, she is best known for her roles in "Bye Bye Birdie" (1963), "Viva Las Vegas" (1964), "The Cincinnati Kid" (1965), "Carnal Knowledge" (1971), "Tommy" (1975), "Grumpy Old Men" (1993), and "Grumpier Old Men" (1995). She has won five Golden Globe Awards and been nominated for two Academy Awards, two Grammy Awards, a Screen Actors Guild Award, and six Emmy Awards.
Document 4: Mary Martin: Mary Virginia Martin (December 1, 1913 – November 3, 1990) was an American actress, singer, and Broadway star. A muse of Rodgers and Hammerstein, she originated many leading roles over her career including Nellie Forbush in "South Pacific" and Maria von Trapp in "The Sound of Music". She was named a Kennedy Center Honoree in 1989. She was the mother of actor Larry Hagman.
Document 5: David Cassidy discography: The discography of David Cassidy, an American pop artist, consists of twelve studio albums, three live albums, six compilation albums, two soundtrack albums, and twenty-four singles. David Cassidy has been recording albums since 1970. His career is most notable for his solo music and his recordings with the Partridge Family.
Document 6: Shirley Jones: Shirley Mae Jones (born March 31, 1934) is an American singer and actress of stage, film and television. In her six decades of show business, she has starred as wholesome characters in a number of well-known musical films, such as "Oklahoma!" (1955), "Carousel" (1956), and "The Music Man" (1962). She won the Academy Award for Best Supporting Actress for playing a vengeful prostitute in "Elmer Gantry" (1960). She played the lead role of Shirley Partridge, the widowed mother of five children, in the musical situation-comedy television series "The Partridge Family" (1970–74), which co-starred her real-life stepson David Cassidy, son of Jack Cassidy.
Document 7: A Partridge Family Christmas Card: A Partridge Family Christmas Card was originally released as a vinyl album of Christmas music in 1971. The case of the album contains a reproduction of a Christmas card that was signed by the whole Partridge Family, the stars of a 1970s sitcom. The song "My Christmas Card to You" was original, but the remainder of the tracks were standards. Like most of the Partridge Family songs, the lead vocals are sung by David Cassidy, who played Keith Partridge in the show. The album also features one of the few Partridge Family recordings featuring Shirley Jones as the lead singer ("The Christmas Song").
Document 8: Shaun Cassidy: Shaun Paul Cassidy (born September 27, 1958) is an American television producer/creator, screenwriter, and former singer and actor. He is the eldest son of Shirley Jones and Jack Cassidy. His older half-brother is David Cassidy.
Document 9: The Partridge Family Album: The Partridge Family Album is The Partridge Family's first album. It was released in 1970 and included their first recording, "I Think I Love You". It has a picture of the whole family on the back and a small picture of David Cassidy and Shirley Jones. The album cover is made to look like an old-fashioned photo album. The original release of the album included a framed color photograph of the group. The exterior label promoting the inclusion of the hit song was affixed to the jacket itself, not the shrink wrap.
Document 10: Judy Garland: Judy Garland (born Frances Ethel Gumm; June 10, 1922 – June 22, 1969) was an American singer, actress, and vaudevillian. She was renowned for her contralto vocals and attained international stardom that continued throughout a career spanning more than 40 years as an actress in musical and dramatic roles, as a recording artist, and on concert stages.
Document 11: David Cassidy: Man Undercover: David Cassidy: Man Undercover (the word "undercover" in the series title appeared at various times written as one word or two) was an American police drama starring David Cassidy, four years after his run starring in the "The Partridge Family", marking his first starring role since that series was cancelled. The series was spun off after Cassidy starred in a special two-hour episode of "Police Story", titled "A Chance to Live," which aired in May 1978; this episode served as the pilot for "Man Undercover".
Document 12: Oklahoma! (1955 film): Oklahoma! is a 1955 musical film based on the 1943 stage musical "Oklahoma!", written by composer Richard Rodgers, and lyricist/librettist Oscar Hammerstein II and starring Gordon MacRae, Shirley Jones (in her film debut), Rod Steiger, Charlotte Greenwood, Gloria Grahame, Gene Nelson, James Whitmore and Eddie Albert. The production was the only musical directed by Fred Zinnemann. "Oklahoma!" was the first feature film photographed in the Todd-AO 70 mm widescreen process (and, was simultaneously filmed in CinemaScope 35mm).
Document 13: David Cassidy: David Bruce Cassidy (born April 12, 1950) is a retired American actor, singer, songwriter, and guitarist. He is known for his role as Keith Partridge, the son of Shirley Partridge (played by his stepmother Shirley Jones), in the 1970s musical-sitcom "The Partridge Family", which led to his becoming one of popular culture's teen idols and pop singers of the 1970s. He later had a career in both acting and music.
Document 14: The Bardy Bunch: The Bardy Bunch: The War of the Families Partridge and Brady is a hit musical that premiered in 2011 at the New York International Fringe Festival. Written by Stephen Garvey and directed by Jay Stern, The Bardy Bunch presents a comedy mash-up of a dozen Shakespeare plays set in the 1970s amid a war between the popular sitcom families Partridge and Brady. The musical features 15 of the hit songs made famous on "The Partridge Family" and "The Brady Bunch" including "I Think I Love You," "It's a Sunshine Day," and "I Woke Up In Love This Morning."
Document 15: Greatest Hits (Partridge Family album): The Partridge Family's Greatest Hits album was issued by Arista in 1989. It was never released on vinyl, only on cassette and compact disc, and is the first Partridge Family album to ever be released on CD. It contains 16 songs, including the TV show's second theme song, "Come on Get Happy" which was never featured on a Partridge family album, and two songs by David Cassidy as a solo act: "Cherish" and "Could It Be Forever". It has liner notes by Danny Bonaduce and a Partridge Family trivia quiz. The cover has a picture of a period lunchbox with a cartoon picture of the family in red velvet suits.
ground_truth: ABC