Columbia subject headings:
Fontane, Theodor, 1819-1898--Congresses.
Stauffer, Karl, 1857-1891--Congresses.
Welti-Escher, Lydia, 1858-1891--Congresses.
Harvard subject headings:
Brahm, Otto, 1856-1912--Congresses.
Fontane, Theodor, 1819-1898--Congresses.
Stauffer, Karl, 1857-1891--Congresses.
Welti, Friedrich Emil, 1857---Congresses.
Welti-Escher, Lydia, 1858-1891--Congresses.
Princeton subject headings:
Fontane, Theodor, 1819-1898--Congresses.
Stauffer, Karl, 1857-1891--Congresses.
Welti-Escher, Lydia, 1858-1891--Congresses.