Columbia subject headings:
Bund Freireligiöser Gemeinden Deutschlands--History.
Free thought--Poland--Wrocław.
Freethinkers--Poland--Wrocław.
German Catholicism.
Hofferichter, Theodor, 1815-1886.
Liberalism (Religion)--Poland--Wrocław.
Nees von Esenbeck, C. G. (Christian Gottfried), 1776-1858.
Tschirn, Gustav, 1865-1931.
Harvard subject headings:
Free thought--Poland--Wrocław.
Freethinkers--Poland--Wrocław.
Freireligiöse Gemeinde zu Breslau--History.
Hofferichter, Theodor, 1815-1886.
Liberalism (Religion)--Poland--Wrocław.
Nees von Esenbeck, C. G. (Christian Gottfried), 1776-1858.
Tschirn, Gustav, 1865-1931.
Princeton subject headings: