One descriptive gazetteer for the Grand Duchy of Hessen is
Das Grossherzogthum Hessen nach Geschichte, Land, Volk, Staat, und Oertlichkeit
by Dr. Ph. A. F. Walther
published in Darmstadt 1854, Verlag der Hofbuchhandlung von G. Jonghaus
This book is written in German. An extensive historical section is followed by a listing of all places from highest to lowest jurisdictions. The book includes a place name index in the back.