Lotr_bookJeff Guin writes that U.S. publisher, Hougton Mifflin, has published JRR Tolkien's "Lord of the Rings" as a single collector's edition.

Tolkien saw his single story arbitrarily divided into three separate titles -- The Fellowship of the Ring (1954), The Two Towers (1955) and The Return of the King (1956). These editions had one color of ink and no extra maps. His displeasure was extreme, but because none of the three sold especially well -- sometimes as few as 1,500 copies annually each over the next decade, Harper notes -- Tolkien's snit made little difference.

Growing up in the 80's, I read all three as paperbacks.  I still have my original set which included a fourth book, "The Hobbit."  My worn copy of Fellowship still sports masking tape on the spine.  It took a good beating from daily rides in my school book bag.
I will definitely place this new, "Lord of the Rings," edition on my Christmas list.