the foundations of the universe of Tolkien

Remarkable work on the myths and legends that have inspired JRR Tolkien "Tolkien's ring" by David Day tries (and succeeds perfectly) to plunge us into a fantasy world similar to the Lord of the Rings. Appreciating the work of Tolkien, is to become aware of its originality in both his creativity in his adaptations of ancient legends and myths.
Illustrated by the talented Alan Lee, this book takes us through time and space, as well cotoyant sandinaves legends, Greek, Germanic in mythical times see mediaeval to open up a window on some of the knowledge and Tolkien so, try to capture the spirit of Tolkien.
The rings, central object in the work of Tolkien, is part of our European heritage. This book attempts to show, while paralleling "wild sows", quotes, passages from Lord of the Rings.
Read and reread, I can only advise you to read this work, essential for anyone wishing to delve into the mind of Tolkien, in these specific references.