Columbia subject headings:
Autographs--Collectors and collecting--Exhibitions.
Beethoven, Ludwig van, 1770-1827--Autographs--Exhibitions.
Bodmer, H. C. (Hans C.)--Correspondence--Exhibitions.
Music--Manuscripts--Collectors and collecting--Exhibitions.
Unger, Max, 1883-1959--Correspondence--Exhibitions.
Zweig, Stefan, 1881-1942--Correspondence--Exhibitions.
Harvard subject headings:
Autographs--Collectors and collecting--Austria--Exhibitions.
Beethoven, Ludwig van, 1770-1827--Autographs--Exhibitions.
Bodmer, H. C. (Hans C.)--Correspondence--Exhibitions.
Composers--Austria--Autographs--Exhibitions.
Composers--Germany--Autographs--Exhibitions.
Music--Manuscripts--Collectors and collecting--Austria--Exhibitions.
Musicians--Austria--Autographs--Exhibitions.
Musicians--Germany--Autographs--Exhibitions.
Unger, Max, 1883-1959--Correspondence--Exhibitions.
Zweig, Stefan, 1881-1942. Correspondence--Exhibitions.
Princeton subject headings:
Autographs--Collectors and collecting--Exhibitions.
Beethoven, Ludwig van, 1770-1827--Autographs--Exhibitions.
Bodmer, H. C. (Hans C.)--Correspondence--Exhibitions.
Music--Manuscripts--Collectors and collecting--Exhibitions.
Unger, Max, 1883-1959--Correspondence--Exhibitions.
Zweig, Stefan, 1881-1942--Correspondence--Exhibitions.