The Umbra
Articles dealing with the Umbra as a whole.
- The Umbra by Paul Strack — A very good attempt to explain how the realms fit together
- A Telluric Topography by Aurelius
- Tome of the Umbra by Michael L. Singer
- Temporal Variations of Paradigm Rigidity — Dr. W. Riesel of the Sons of Ether speculates about the varying thickness of the Gauntlet