When Dungeons and Dragons was first released, it made no secret of its many literary influences. Authors which helped inspire the game included Robert E. Howard, Clark Ashton Smith, Fritz Leiber, Jack Vance. One author which stood above all others in the fantasy writer canon was J.R.R. Tolkien, whose work, The Lord of the Rings, had a popularity unmatched by any other fantasy author at that time and arguably since.
Even though Gary Gygax, the author of Chainmail (1971) and co-author of Dungeons and Dragons (1974), was not the greatest fan of Tolkien's work, he had no compunction about including certain of Tolkien's creations in his published work. The most notable was the inclusion of Hobbits as playable troop types characters whose characteristics were described in the above-mentioned works. Other Tolkien creations, like Balrogs and Ents, also featured in the games. Their inclusion continued in the five D&D Supplements and the D&D Basic Set published from 1975 to 1977.
While D&D was a small niche hobby publication, this unapproved borrowing did not attract notice, but as the popularity of D&D increased it started receiving mainstream attention. Sometime in mid-to-late 1977 TSR, the publishers of D&D, received a letter from representatives of Tolkien Enterprises (which held the film rights) demanding they cease using Tolkien's literary creations in their products. TSR then complied with the demand by trying to rename every instance of a Tolkien-derived name from their products and reprinting them. But some references were thought too blatant to just handle with a name change, so the balrog and several references to Tolkien got cut from the texts. This blog entry will try to identify every change in these works.