The Tolkiennymicon: Studies in Tolkiennymy; Or, Searching for the Origins of Elvo-Indo-European in Tolkien's Elvish Lexicon Paperback – January 31, 2018

An interesting and informative book for any Tolkien enthusiast. A good supply of the etymology or inspiration for the various names and “foreign” words in Tolkien’s Middle-Earth. Good even just for dipping into.