Stephen King's the Dark Tower: a Concordance, Volume II 1st Ed. edition

A Concordance, Volume II is the definitive guide to the many worlds, argots, characters, and cross-references -- within the Dark Tower series and among the rest of King's work -- that appear in Books V through VII: Wolves of the Calla, Song of Susannah, and The Dark Tower.
Characters and Genealogies
Magical Objects and Forces
Mid-World and Our World Places
Portals and Magical Places
Mid-, End-, and Our World Maps
Timeline for the Dark Tower Series
Mid-World Dialects
Mid-World Rhymes, Songs, and Prayers
Political and Cultural References
References to Stephen King's Own Work