This article is from the Tolkien Newsgroups FAQ, by Steuard Jensen sbjensen@midway.uchicago.edu with numerous contributions by others.
Every edition of Tolkien's books is different, and before you buy a
copy it's worth knowing what those differences are. Mike Brinza has
created an excellent guide to the editions of Tolkien's books currently
available in the United States, which is on the web at
http://users.telerama.com/~taliesen/tolkien/editions.html
Comments on the various audio recordings and dramatizations of _The
Lord of the Rings_ can also be found at this site, at the bottom of the
page listing editions of that book. (Some information on recordings
from other works is given there as well.)
One book that deserves its own mention is _The Hobbit_: many find
that _The Annotated Hobbit_, edited by Douglas A. Anderson, is the most
satisfying edition of the story. It contains illustrations from many
other editions, as well as detailed commentary on the text and its
history (which can, of course, be ignored if you're not interested).
 
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