Question: What year did the seventh musical by the team that wrote "Oklahoma" premier?

Pipe Dream is the seventh musical by the team of Richard Rodgers and Oscar Hammerstein II; it premiered on Broadway on November 30, 1955.  The work is based on John Steinbeck's short novel "Sweet Thursday"—Steinbeck wrote the novel, a sequel to "Cannery Row", in the hope of having it adapted into a musical.  Set in Monterey, California, the musical tells the story of the romance between Doc, a marine biologist, and Suzy, who in the novel is a prostitute; her profession is only alluded to in the stage work.  "Pipe Dream" was a flop and a financial disaster for Rodgers and Hammerstein. <SEP> Oscar Greeley Clendenning Hammerstein II ( ; July 12, 1895 – August 23, 1960) was an American librettist, theatrical producer, and (usually uncredited) theatre director of musicals for almost forty years.  Hammerstein won eight Tony Awards and two Academy Awards for Best Original Song.  Many of his songs are standard repertoire for vocalist's and jazz musicians.  He co-wrote 850 songs.  Hammerstein was the lyricist and playwright in his partnerships; his collaborators wrote the music.  Hammerstein collaborated with numerous composers, such as Jerome Kern, with whom he wrote "Show Boat", Vincent Youmans, Rudolf Friml, Richard A. Whiting and Sigmund Romberg; but he is best known for his collaborations with Richard Rodgers, as the duo Rodgers and Hammerstein which include "Oklahoma! ", "Carousel", "South Pacific", "The King and I", and "The Sound of Music". <SEP> John A. "Jack" Harts was a student and teacher at the University of Oklahoma from Winfield, Kansas.  He was also the first coach of the Oklahoma Sooners football team in 1895.  At the university, he taught elocution.  He was the primary organizer of that first team made up of students and Norman, Oklahoma residents.  The team only played one game that year against a more experienced Oklahoma City town team.  The upstart Sooners lost 34–0.  Following that year, Harts left OU to prospect for gold in the Arctic. <SEP> James Clark "Jim" Nance (August 27, 1893 – September 3, 1984) was a leader for 40 years in the Oklahoma Legislature in the U.S. state of Oklahoma and was community newspaper chain publisher 66 years.  Nance served as Speaker of the Oklahoma House of Representatives and President pro tempore of the Oklahoma Senate.  During his legislative career, Nance wrote the "Honest Mistake" law which became a model for other states.  Nance then became a key sponsor and Legislative Chairman of the U.S. Uniform Law Commission (ULC), sponsored by the National Conference of Commissioners on Uniform State Laws, a non-partisan advisory panel which drafted uniform acts and uniform state commerce laws.  Nance became known as a legislative expert in a 40 year legislative career as one of two Oklahomans to hold the top posts in both chambers of the Oklahoma Legislature.  The state's largest newspaper, The Daily Oklahoman wrote he was the "longest serving Oklahoma Legislator" and "A Legislator's Legislator."  Nance, a Democrat, is the only Oklahoma House Speaker elected through a bipartisan coalition of Democrats and Republicans.