Columbia subject headings:
Harvard subject headings:
Asia, Central--Study and teaching.
Grünwedel, Albert, 1856-1935--Correspondence.
Kuhn, Ernst, 1846-1920--Correspondence.
South Asia--Study and teaching.
Princeton subject headings:
Grünwedel, Albert, 1856-1935--Correspondence.
Kuhn, Ernst, 1846-1920--Correspondence.
Personal correspondence.