Columbia subject headings:
Church archives--Germany--Essen.
St. Ludgerus (Church : Essen, Germany)--Archives--Catalogs.
St. Ludgerus (Church : Essen, Germany)--History--Sources.
Werden (Essen, Germany)--Church history.
Werden (Essen, Germany)--History--Sources.
Harvard subject headings:
Church archives--Germany--Essen.
Manuscripts, German--Germany--Essen.
St. Ludgerus (Church : Essen, Germany)--Archives--Catalogs.
St. Ludgerus (Church : Essen, Germany)--History--Sources.
Werden (Essen, Germany)--Church history.
Werden (Essen, Germany)--History--Sources.
Princeton subject headings:
Church archives--Germany--Essen.
St. Ludgerus (Church : Essen, Germany)--Archives--Catalogs.
St. Ludgerus (Church : Essen, Germany)--History--Sources.
Werden (Essen, Germany)--Church history.
Werden (Essen, Germany)--History--Sources.