Columbia subject headings:
Hille, Peter, 1854-1904--Criticism and interpretation--Congresses.
Lasker-Schüler, Else, 1869-1945--Criticism and interpretation--Congresses.
Harvard subject headings:
Hille, Peter, 1854-1904--Criticism and interpretation--Congresses.
Lasker-Schüler, Else, 1869-1945--Criticism and interpretation--Congresses.
Princeton subject headings:
Hille, Peter, 1854-1904--Criticism and interpretation--Congresses.
Lasker-Schüler, Else, 1869-1945--Criticism and interpretation--Congresses.