Columbia subject headings:
Alaska--Commerce--History--19th century.
Rossiĭsko-amerikanskai︠a︡ kompanii︠a︡--History--19th century.
Russia--Colonies--America--19th century.
Harvard subject headings:
Alaska--History--To 1867
Rossiĭsko-amerikanskai︠a︡ kompanii︠a︡
Russia--Colonies--America--History.
Princeton subject headings:
Alaska--History--To 1867.
Rossiĭsko-amerikanskai︠a︡ kompanii︠a︡.
Russia--Colonies--America--History.