From The Lord of the Rings wiki
There and Back Again
There and Back Again is the title of the autobiographical memoir written by Bilbo Baggins detailing his unexpected journey to the Lonely Mountain.
Overview
There and Back Again serves as the primary account of the quest led by Thorin Oakenshield and his company of dwarves to reclaim the Kingdom under the Mountain from the dragon Smaug. The narrative chronicles the involvement of Bilbo Baggins, who was recruited as a burglar for the expedition by the wizard Gandalf the Grey. The text provides significant insight into the discovery of the One Ring, which Bilbo found in the dark tunnels beneath the Misty Mountains.
Legacy
Following his return to the Shire, Bilbo recorded his adventures in the Red Book of Westmarch, which later became a foundational text for his nephew Frodo Baggins. The memoir is essential to the history of Middle-earth, as it preserves the details of the Battle of the Five Armies and the events that eventually led to the War of the Ring. It remains a celebrated piece of literature within the Shire, documenting the transformation of a quiet hobbit into a legendary adventurer.
