system
Given the following post, respond as if you're commenting on Reddit:
human
Do the books Bilbo and Frodo wrote actually exist as their own or are they the Hobbit and LOTR respectively?
gpt
It's actually one book, called the Red Book of Westmarch. A single volume within which is contained Bilbo Baggin's account of going to the Lonely Mountain in the company of Thorin Oakenshield called "There and Back Again". Later, his nephew Frodo Baggins expanded upon the tale with his "the Lord of the Rings" written in the same book.

Incidentally, this one meager volume is essentially our only primary source from the Third Age of Middle Earth.