Columbia subject headings:
Harvard subject headings:
Gwalther, Rudolf, 1519-1586--Correspondence--Catalogs.
Gwalther, Rudolf, 1552-1575--Correspondence--Catalogs.
Princeton subject headings:
Catalogs.
Gwalther, Rudolf, 1519-1586--Correspondence--Catalogs.
Gwalther, Rudolf, 1552-1575--Correspondence--Catalogs.