Question: How many volumes were released of the book in which Lisa is teaching Bart to read in The Simpson's episode "The Man in the Blue Flannel Pants?"

full_context: Document 1: Little Men: Little Men, or Life at Plumfield with Jo's Boys, is a novel by American author Louisa May Alcott, first published in 1871. The novel reprises characters from "Little Women" and is considered by some the second book in an unofficial "Little Women" trilogy, which is completed with Alcott's 1886 novel "Jo's Boys, and How They Turned Out: A Sequel to "Little Men"". It tells the story of Jo Bhaer and the children at Plumfield Estate School. It was inspired by the death of Alcott's brother-in-law, which reveals itself in one of the last chapters, when a beloved character from "Little Women" passes away. It has been adapted to a 1934 film, a 1940 film, a 1998 film, a television series, and a .
Document 2: The Man in the Blue Flannel Pants: "The Man in the Blue Flannel Pants" is the seventh episode of the twenty-third season of the American animated sitcom "The Simpsons". It first aired on the Fox network in the United States on November 27, 2011, and was seen by around 5.6 million people during this broadcast. In the episode, Homer becomes an account manager for Mr. Burns after successfully hosting a viral marketing event for Krusty the Clown. Meanwhile, Lisa is teaching Bart how to read classic novels like "Little Women". Homer's new job affects his family as he becomes more distant and in the end he has to choose between his family or his new job. The episode's title references "The Man in the Gray Flannel Suit".
Document 3: Little Women (1950 TV series): Little Women is a British television mini-series broadcast by the BBC from 1950 to 1951 in six parts. An adaptation by Winifred Oughton and Brenda R. Thompson of Louisa May Alcott's "Little Women", it was produced by Pamela Brown and sets were designed by Stephen Taylor. Cast included Sheila Shand Gibbs, Jane Hardie, Norah Gorsen, David Jacobs, Anita Sharp-Bolster, Susan Stephen, Barbara Everest, Wensley Pithey, and Alan Bromly.
Document 4: Louisa May Alcott: Louisa May Alcott ( ; November 29, 1832March 6, 1888) was an American novelist and poet best known as the author of the novel "Little Women" (1868) and its sequels "Little Men" (1871) and "Jo's Boys" (1886). Raised by her transcendentalist parents, Abigail May and Amos Bronson Alcott in New England, she also grew up among many of the well-known intellectuals of the day such as Ralph Waldo Emerson, Nathaniel Hawthorne, and Henry David Thoreau.
Document 5: Lisa's Pony: "Lisa's Pony" is the eighth episode in the third season of the American animated television series "The Simpsons". It originally aired on the Fox network in the United States on November 7, 1991. In this episode, Homer goes drinking at Moe's Tavern instead of buying a new reed for Lisa's saxophone, resulting in her flopping at the school talent show. Desperate to win back his daughter's love, Homer gives Lisa the one thing she has always wanted: a pony. Homer struggles with two jobs to cover the cost of sheltering and feeding the pony. Lisa, upon seeing what Homer must go through to pay for the pony, decides to give it away.
Document 6: 22 for 30: "22 for 30" is the seventeenth episode of the twenty-eighth season of the animated television series "The Simpsons", and the 613th episode of the series overall. It aired in the United States on Fox on March 12, 2017. In a parody of "30 for 30", Bart goes from delinquent with detention to the star basketball player at Springfield Elementary. Lisa covers Bart's success for the school paper, and Homer becomes the team's coach. Things go awry when Bart gets involved with the mafia.
Document 7: Eden's Outcasts: Eden's Outcasts: The Story of Louisa May Alcott and Her Father is a 2007 biography by John Matteson of Louisa May Alcott, best known as the author of "Little Women", and her father, Amos Bronson Alcott, an American transcendentalist philosopher and the founder of the Fruitlands utopian community. "Eden's Outcasts" won the 2008 Pulitzer Prize for Biography.
Document 8: The Book Job: "The Book Job" is the sixth episode of the twenty-third season of the American animated sitcom "The Simpsons". It originally aired on the Fox network in the United States on November 20, 2011. In the episode, Lisa is shocked to discover that all popular young-adult novels are not each written by a single author with any inspiration, but are conceived by book publishing executives through use of market research and ghostwriters to make money. When Homer hears this, he decides to get rich by starting work on a fantasy novel about trolls together with Bart, Principal Skinner, Patty, Moe, Professor Frink, and author Neil Gaiman. Lisa, who does not think writing should be about money, decides to write a novel on her own. However, she is constantly distracted by other things and fails to make any progress on it. After selling their novel to a book publishing executive, the group members later discover that the executive has replaced the trolls with vampires because vampires are more popular. In an attempt to replace this new version with the old before the novel goes into print, they break into the book publishing company's headquarters.
Document 9: List of Little House on the Prairie books: The original Little House books were a series of eight autobiographical children's novels written by Laura Ingalls Wilder and published by Harper & Brothers from 1932 to 1943. The eighth book, "These Happy Golden Years", featured Laura Ingalls at ages 15 to 18 and was originally published with one page at the end containing the note, "The end of the Little House books." The ninth and last novel written by Ingalls Wilder, "The First Four Years" was published posthumously and unfinished in 1971. Although her intentions are unknown, it is commonly considered part of the Little House series and is included in the 9-volume paperback box set "Little House, Big Adventure" (Harper Trophy, May 1994).
Document 10: Bart Stops to Smell the Roosevelts: "Bart Stops to Smell the Roosevelts" is the second episode of the twenty-third season of the American animated sitcom "The Simpsons". It originally aired on the Fox network in the United States on October 2, 2011. The episode was the first to feature Superintendent Chalmers as the central character and Chalmers' flashbacks references the films "The Breakfast Club" and "Fight Club". In the episode, Principal Skinner challenges Superintendent Chalmers to take over Bart's education after one of his pranks. Chalmers accepts and starts teaching Bart about Theodore Roosevelt and manliness. After he takes Bart and his friends on an unauthorized field trip which results in one of the children breaking an arm, Chalmers is fired. Bart and his friends then take over the school in an effort to save his job.
Document 11: Team Homer: "Team Homer" is the twelfth episode of "The Simpsons"<nowiki>'</nowiki> seventh season. It originally aired on the Fox network in the United States on January 7, 1996. In the episode, Homer starts a bowling team with Moe, Apu, and Otto. When Mr. Burns discovers the team was funded with his money, he insists on joining. Meanwhile, Bart's "Down with homework" T-shirt incites a student riot that leads to the implementation of a uniform dress code.
Document 12: Laura Ingalls Wilder: Laura Ingalls Wilder ( ; February 7, 1867 – February 10, 1957) was an American writer known for the "Little House on the Prairie" series of children's books released from 1932 to 1943 which were based on her childhood in a settler and pioneer family.
Document 13: Barting Over: "Barting Over" is the eleventh episode of the fourteenth season of "The Simpsons", advertised by Fox, and indicated on-screen to be the 300th episode of the show (though in broadcast order, it is the 302nd episode, as noted in the episode proper). It originally aired on the Fox network in the United States on February 16, 2003. In this episode, Bart discovers that he used to be a child star in commercials—and that Homer spent all the money he earned. In retaliation, Bart petitions the court to be legally emancipated, and he moves out of the house.
Document 14: Little Women: Little Women is a novel by American author Louisa May Alcott (1832–1888), which was originally published in two volumes in 1868 and 1869. Alcott wrote the books rapidly over several months at the request of her publisher.
Document 15: When Flanders Failed: "When Flanders Failed" is the third episode of "The Simpsons"<nowiki>'</nowiki> third season. It originally aired on the Fox network in the United States on October 3, 1991. In the episode, Homer makes a wish for Ned Flanders's new left-handed store to go out of business. The wish comes true and gets the Flanders family into financial troubles. Ned is forced to sell his possessions, and Homer gleefully buys many of his things. When finding out that Ned's house is to be repossessed, Homer feels guilty and decides to get the store back in business by telling all the left-handed citizens about it. Meanwhile, Bart takes karate lessons but quits after discovering that it is not as interesting as he had expected it to be.
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