Columbia subject headings:
Stadtarchiv Krefeld--Catalogs.
Vielhaber, Walter Anton, 1865-1940--Archives--Catalogs.
Harvard subject headings:
Family archives--Germany--Krefeld--Catalogs.
Krefeld (Germany)--History--Sources--Bibliography--Catalogs.
Stadtarchiv Krefeld--Catalogs.
Vielhaber, Walter Anton, 1865-1940--Archives--Catalogs.
Princeton subject headings:
Stadtarchiv Krefeld--Catalogs.
Vielhaber, Walter Anton, 1865-1940--Archives--Catalogs.