TheOneRing.Net

title	ISBN-13 (ISBN-10)	year of publication
More People's Guide to J.R.R. Tolkien	978-1-59360-026-6 (1-59360-026-7)	2004
The People's Guide to J.R.R. Tolkien	978-1-892975-90-4 (1-892975-90-4)	2003