Columbia subject headings:
Kuhn, Ernst, 1846-1920--Correspondence.
Thomsen, Vilhelm, 1842-1927--Correspondence.
Harvard subject headings:
Kuhn, Ernst, 1846-1920--Correspondence.
Thomsen, Vilhelm, 1842-1927--Correspondence.
Princeton subject headings:
Indologists--Germany--Correspondence.
Kuhn, Ernst, 1846-1920--Correspondence.
Philologists--Denmark--Correspondence.
Thomsen, Vilhelm, 1842-1927--Correspondence.