Columbia subject headings:
Authors, Norwegian--19th century--Correspondence.
Bjørnson, Bjørnstjerne, 1832-1910--Correspondence.
Harden, Maximilian, 1861-1927--Correspondence.
Harvard subject headings:
Authors, Norwegian--19th century--Correspondence.
Bjørnson, Bjørnstjerne, 1832-1910--Correspondence.
Harden, Maximilian, 1861-1927--Correspondence.
Princeton subject headings:
Authors, German--19th century--Correspondence.
Authors, Norwegian--19th century--Correspondence.
Bjørnson, Bjørnstjerne, 1832-1910--Correspondence.
Harden, Maximilian, 1861-1927--Correspondence.
Journalists--Germany--Correspondence.