Columbia subject headings:
Brentano, Franz, 1838-1917--Correspondence.
Philosophers--Germany--Correspondence.
Stumpf, Carl, 1848-1936--Correspondence.
Harvard subject headings:
Brentano, Franz, 1838-1917--Correspondence.
Philosophers--Germany--Correspondence
Stumpf, Carl, 1848-1936--Correspondence.
Princeton subject headings:
Brentano, Franz, 1838-1917--Correspondence.
Philosophers--Germany--Correspondence.
Stumpf, Carl, 1848-1936--Correspondence.