Columbia subject headings:
Harvard subject headings:
Commercial correspondence, German--History.
Ship captains--Germany--Bremerhaven--Correspondence.
Shipping--Germany--History.
Wieting, Heinrich, 1815-1868--Correspondence.
Princeton subject headings:
Bremen (Germany)--Emigration and immigration--History--19th century--Sources.
Ship captains--Germany--Correspondence.
United States--Emigration and immigration--History--19th century--Sources.
Wieting, Heinrich, 1815-1868.