The Hobbit first came to Oxford University professor J.R.R. Tolkien when he was grading papers in the early 1930s. Coming upon a blank page in an exam book, he suddenly wrote “In a hole in the ground there lived a hobbit.” Tolkien worked on The Hobbit for the next several years before submitting it for publication in 1936 as a children’s book to George Allen & Unwin, then known mainly as an academic publishing house. The publisher Stanley Unwin paid his ten-year-old son Rayner a shilling to review the manuscript, which he reported on as follows:

"Bilbo Baggins was a Hobbit who lived in his Hobbit hole and never went for adventures, at last Gandalf the wizard and his Dwarves persuaded him to go. He had a very exiting (sic) time fighting goblins and wargs. At last they get to the lonely mountain; Smaug, the dragon who guards it is killed and after a terrific battle with the goblins he returned home — rich!

This book, with the help of maps, does not need any illustrations it is good and should appeal to all children between the ages of 5 and 9."

Young Rayner Unwin’s recommendation convinced his father to publish The Hobbit in hardcover in 1937, to strong sales and critical acclaim. Stanley Unwin asked Tolkien for a sequel to The Hobbit as early as December 1937, a request that would take over 15 years to come to fruition as The Lord of the Rings. During that long process, Tolkien would revise The Hobbit for the first time to bring it into closer agreement with developments in The Lord of the Rings, especially in the depiction of Gollum and the One Ring.

Although The Hobbit had been available in the U.S. from 1938 in hardcover, it had not been published in U.S. paperback by the mid 1960s, partly because of Tolkien’s distaste for the “degenerate” paperback format. This all changed when Ace Books put out an unauthorized U.S. paperback edition of The Lord of the Rings in 1965 after finding what they perceived to be a copyright loophole. Ballantine Books rushed to put out authorized U.S. paperback editions of The Lord of the Rings and The Hobbit in 1965. Tolkien made additional revisions to both works both for his own satisfaction and to cement their U.S. copyright status, with The Hobbit’s third edition appearing in 1966.

The most common version of The Hobbit available during the Appendix N era would have been the 45th printing and onwards of the Ballantine Books revised paperback, featuring a lovely watercolor cover illustration by Tolkien himself of Bilbo’s escape from Mirkwood astride a barrel.

Gary Gygax denied that Tolkien’s works were a particular influence on the development of Dungeons & Dragons, but he certainly would have been conscious of the desire of prospective players to experience the trappings of Middle-earth. Many denizens of Middle-earth including Hobbits, Ents, Orcs, and Balrogs were present in the “Fantasy Supplement” of Chainmail (1971), Gary Gygax’s medieval miniatures wargame that was the immediate predecessor to Dungeons & Dragons.

The Tolkienian references continued in Gary Gygax and Dave Arneson’s original Dungeons & Dragons (1974) box set until the Tolkien estate caught wind of this. To avoid copyright and trademark violations, TSR modified or removed Tolkienian references from Chainmail and Dungeons & Dragons in 1977, with Hobbits becoming Halflings, Ents becoming Treants, and Balrogs becoming Type VI Demons, etc.