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?"

Context articles: Girly Edition
Odia Ofeimun
The Itchy &amp; Scratchy Show
Little Women
Bart Stops to Smell the Roosevelts
The Man in the Blue Flannel Pants
Make Room for Lisa
Bart vs. Thanksgiving
Bart Sells His Soul
The Blue Flannel Suit

"Girly Edition" is the twenty-first episode in the ninth season of the American animated television series "The Simpsons".
 It originally aired on the Fox network in the United States on April 19, 1998.
 In the episode, Lisa and Bart Simpson must co-anchor a new news program, though when Bart is seen as a more successful news anchor, Lisa becomes jealous and seeks revenge.
 Meanwhile, in the subplot, Homer Simpson gets a monkey helper because of his laziness.
 "Girly Edition" was the first episode written by Larry Doyle and was directed by Mark Kirkland.
 Much of the subplot was inspired by the film "Monkey Shines".
 Critics gave the episode positive reviews and it was well received by Lisa's voice actress Yeardley Smith.
Odia Ofeimun (born 16 March 1950) is a Nigerian poet and polemicist, the author of many volumes of poetry, books of political essays and on cultural politics, and the editor of significant two anthologies of Nigerian poetry.
 His work has been widely anthologized and translated and he has read and performed his poetry internationally.
The Itchy & Scratchy Show (often shortened as Itchy & Scratchy) is a running gag and fictional animated television series featured in the American animated television series "The Simpsons".
 It usually appears as a part of "The Krusty the Clown Show", watched regularly by Bart Simpson and Lisa Simpson.
 Itself an animated cartoon, "The Itchy & Scratchy Show" depicts a sadistic anthropomorphic blue mouse, Itchy (voiced by Dan Castellaneta), who repeatedly maims and kills an anthropomorphic, hapless threadbare black cat, Scratchy (voiced by Harry Shearer).
 The cartoon first appeared in "The Tracey Ullman Show" short "The Bart Simpson Show", which originally aired November 20, 1988.
 The cartoon's first appearance in "The Simpsons" was in the 1990 episode "There's No Disgrace Like Home".
 Typically presented as 15-to-60-second-long cartoons, the show is filled with gratuitous violence.
 "The Simpsons" also occasionally features characters who are involved with the production of "The Itchy & Scratchy Show", including Roger Meyers Jr. (voiced by Alex Rocco, and, later, Hank Azaria), who runs the studio and produces the show.
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.
"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.
"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".
"Make Room for Lisa" is the sixteenth episode of "The Simpsons"' tenth season.
 It first aired on the Fox network in the United States on February 28, 1999.
 In the episode, while visiting the Smithsonian expedition, Homer Simpson meets a businesswoman who convinces him to build a cell phone tower in the Simpsons house, making it take up Lisa's room.
 Lisa is forced to share Bart's room, but the stress of living in the same room as Bart gives her stomach aches.
 Homer and Lisa decide to visit a New Age store, where the owner convinces them to go on a spiritual journey by lying in a sensory deprivation tank for a prolonged amount of time.
"Bart vs. Thanksgiving" is the seventh episode of "The Simpsons"<nowiki>'</nowiki> second season.
 It originally aired on the Fox network in the United States on November 22, 1990.
 In the episode, Lisa makes a table centerpiece for the Thanksgiving dinner, which Bart accidentally destroys.
 After he is sent to his room by his parents, Bart runs away from home and stays at a soup kitchen for homeless people.
 Bart returns home eventually and climbs to the roof of the Simpson family's house, where he hears Lisa sobbing.
 He apologizes to her, and the family happily enjoys a meal of leftovers.
"Bart Sells His Soul" is the fourth episode of "The Simpsons"<nowiki>'</nowiki> seventh season.
 It first aired on the Fox network in the United States on October 8, 1995.
 In the episode, while being punished for playing a prank at church, Bart declares that there is no such thing as a soul and to prove it he sells his to Milhouse for $5 in the form of a piece of paper with "Bart Simpson's soul" written on it.
 Lisa warns that Bart will regret this decision, and Bart soon experiences strange changes in his life.
 Thinking he has really lost his soul, he becomes desperate to get it back.
 Lisa eventually obtains it and returns it to a relieved Bart.
"The Blue Flannel Suit" is a poem by Ted Hughes published in 1998 in his book "Birthday Letters".
 The 30th of 88 poems in the collection, "The Blue Flannel Suit" is one of several in the series explicitly about his wife Sylvia Plath.
 Prior to the series, Hughes had rarely discussed their relationship or Plath's death or responded to claims by some critics that he bore some responsibility for her state of mind and death.