- Shadows of Heaven: Religion in the Writing of C.S. Lewis, Charles Williams, J.R.R. TolkienGunnar Urang · Philadelphia: Pilgrim, 1971 · ISBN: 0829801979
- A Tolkien BestiaryDavid Day · Gramercy,
- J.R.R. TolkienCatharine Stimpson · New York: Columbia University Press, 1969
- Tolkien - A BiographyMichael White · London: Little, Brown Books, 2001 · ISBN: 0349116202
- J.R.R. Tolkien and C.S. Lewis - The Story of Their FriendshipColin Duriez · Gloucestershire: Sutton Publishing Ltd, 2003 · ISBN: 0750935413
- Tolkien (2019)
- The New York Times (US)"Plans to Publish Early Tolkien Adventure"February 19, 2009 · Vol. 158, Iss. 54,591, pg. C2 · by: Dave Itzkoff
- The New York Times (US)"'The Rings' Prompts a Long Legal Mire"February 16, 2008 · Vol. 157, Iss. 54,222, pg. B9 & B15 · by: Michael Cieply
- The New York Times (US)"Tolkien Heirs Sue New Line Over Millions From 'Rings'"February 12, 2008 · Vol. 157, Iss. 54,218, pg. C2 · by: Motoko Rich
- Variety (US)"Tolkien Estate Sues New Line"February 11, 2008 · by: Janet Shprintz
- The Daily Telegraph (GB)"Tolkien's hobbit hill up for sale for £500,000"June 22, 2004 · Iss. 46353, pg. 9 · by: Nick Britten
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