Columbia subject headings:
Alaska--History--To 1867.
Russians--Alaska.
Russians--California.
Harvard subject headings:
Alaska--History--To 1867
California--History--19th century.
Russians--Alaska
Russians--Alaska--History--19th century.
Russians--California--History--19th century.
Russians--California.
Princeton subject headings:
Alaska--History--To 1867.
Russians--Alaska.
Russians--California.