Question: In what popular book by Forrest is the feather stored?
About the article "Forrest Gump", section "Feather".

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Various interpretations have been suggested for the feather present at the opening and conclusion of the film.
Sarah Lyall of "The New York Times" noted several opinions that were made about the feather: "Does the white feather symbolize the unbearable lightness of being?
Forrest Gump's impaired intellect?
The randomness of experience?"
Hanks interpreted the feather as: "Our destiny is only defined by how we deal with the chance elements to our life and that's kind of the embodiment of the feather as it comes in.
Here is this thing that can land anywhere and that it lands at your feet.
It has theological implications that are really huge."
Sally Field compared the feather to fate, saying: "It blows in the wind and just touches down here or there.
Was it planned or was it just perchance?"
Visual effects supervisor Ken Ralston compared the feather to an abstract painting: "It can mean so many things to so many different people.
"The feather is stored in a book titled "Curious George", Forrest's favorite book, which his mother read to him, connecting the scene's present time with his childhood in the 1940s.
The placement of the feather in the book is directly on a picture of the monkey walking on a tightrope.
Whether that was intentional or not, it is very symbolic.
The feather also has a correlation with Jenny's constant obsession with "becoming a bird and flying far far away" due to the abuse (sexual and physical) she endured from her father.
She goes as far in the film as to ask Forrest "if jumped off the bridge, could [she fly?"
Timbuktu!
is a musical, with lyrics by George Forrest and Robert Wright, set to music by Borodin, Forrest and Wright.
The book is by Luther Davis.
It is a resetting of Forrest and Wright's musical "Kismet".
The musical is set in 1361, in Timbuktu, in the Ancient Empire of Mali, West Africa. 
 Forrest (surname) Forrest (given name) Forrest (singer), born Forrest Thomas, an American singer popular in the UK and Netherlands  
William Faulkner's 1943 short story "My Grandmother Millard and General Bedford Forrest and The Battle of Harrykin Creek" features Forrest as a character.
Faulkner's 1938 novel "The Unvanquished" is set against the backdrop of Forrest's engagements with Union general Smith (presumably Andrew J. Smith).
"Bedford Forrest: Boy on Horseback" by Aileen Wells Parks in 1952 is part of the "Childhood of Famous Americans" series.
This book is generally hagiographic.
The 1987 novel "Fightin' With Forrest" tells the story of two young men who ride with Forrest during the War.
In the 1990 PBS documentary "The Civil War" by Ken Burns, historian Shelby Foote states in Episode 7 that the Civil War produced two "authentic geniuses:" Abraham Lincoln and Nathan Bedford Forrest.
Foote also used Forrest as a major character in his novel "Shiloh".
In Harry Turtledove's 1992 alternate history/science fiction novel "The Guns of the South", Forrest runs for president of the Confederacy in 1867, losing to Robert E. Lee.
When the book's "Rivington men" turn traitor against the Confederacy, Forrest commands the force sent against them.
Turtledove's subsequent "Timeline-191" series features Forrest's fictional grandson, Nathan Bedford Forrest III, leading the Confederate armed forces during World War II.
In the 1994 film "Forrest Gump", the titular character says that he was named after his ancestor General Nathan Bedford Forrest.
The children's science fiction series "Animorphs" has flashback scenes of an ancestor of one of the main characters fighting a battle against Forrest's brigade.
In the 2004 mockumentary "" a slave narrator cites Nathan Bedford Forrest as the leader of a Confederate army that massacred hundreds of freed slaves in the North shortly after the Civil War, possibly an alternate reference to the Fort Pillow Massacre.
The 2006 song "The Decline and Fall of Country and Western Civilization" by Lambchop begins with the lines: "I hate Nathan Bedford Forrest / He's the featured artist in the Devil's chorus."
The sleep medicine "Nappien" parodies two popular sleeping medicines.
While the name is based on Ambien, the commercials feature a moth based on one used in similar commercials for Lunesta.
The episode features numerous references to TV and film, including Forrest Gump (Mr Burns floats like the feather and music from the film plays in a scene), and Punk'd (Apu pretends he's been reincarnated as a cat, then says "You've been Apu'd").