The Adventures of Tom Bombadil actual translation from the "Red Book of Westmarch", and contains some background information on the world of Middle-earth that is not found elsewhere: e.g. the name of the tower at Dol Amroth and the names of the Seven Rivers of Gondor. There is also some fictional background information of those poems, linking them to Hobbit folklore and literature and to their actual writers (some of them are ascribed to Samwise Gamgee). The book uses the letter "K" instead of "C" for the /k/ sound in Sindarin (one of the languages invented by Tolkien), a spelling variant Tolkien used many times
Samwise Gamgee Gamgee, who had heard that his name was in "The Lord of the Rings" but had not read the book. Tolkien replied on March 18: "Dear Mr. Gamgee, It was very kind of you to write. You can imagine my astonishment when I saw your signature! I can only say, for your comfort, I hope, that the 'Sam Gamgee' of my story is a most heroic character, now widely beloved by many readers, even though his origins are rustic. So that perhaps you will not be displeased at the coincidence of the name of this imaginary character of supposedly many