Columbia subject headings:
Baltic States--Commerce--Netherlands--History--Sources--Bibliography--Catalogs.
Gemeentelijke Archiefdienst Amsterdam--Catalogs.
Grain trade--Netherlands--History--Sources--Bibliography--Catalogs.
Netherlands--Commerce--Baltic States--History--Sources--Bibliography--Catalogs.
Harvard subject headings:
Amsterdam (Netherlands)--Commerce--History--Sources.
Archives--Netherlands--Amsterdam--Catalogs.
Princeton subject headings: