This item is a must-have for all Tolkien fans. Karen Wynn Fonstad first published her book in 1981. It was revised in 1991 and reissued in 2001. The revised edition includes information from the History of Middle-earth series.
I've had the the first edition for decades, but I recently got myself the 2001 edition. It's interesting to compare the updated maps with the originals. Both are very high quality, nonetheless.