Statistisches Repertorium über das Königreich Hannover 1823 [This books gives the former Fürstentum (principality) and also the name of the parish for each village. Includes Reformed churches, Catholic, Mennonite, and Herrenhuter. It has an alphabetical lists of places and the name of the parish to which it belongs. The population and number of "Feuerstellen" are also listed. Google books
Gemeindelexikon für das Königreich Hannover is available on Google.books at this link: Hannover Vol. 9. Also at this Link