Columbia subject headings:
Composers--Netherlands--Correspondence.
Composers--Norway--Correspondence.
Grieg, Edvard, 1843-1907--Correspondence.
Music--Norway--19th century--History and criticism.
Röntgen, Julius, 1855-1932--Correspondence.
Harvard subject headings:
Composers--Correspondence
Grieg, Edvard, 1843-1907. Correspondence
Music--Norway--19th century--History and criticism.
Röntgen, Julius, 1855-1932--Correspondence.
Princeton subject headings:
Composers--Netherlands--Correspondence.
Composers--Norway--Correspondence.
Grieg, Edvard, 1843-1907. Correspondence.
Röntgen, Julius, 1855-1932--Correspondence.