Columbia subject headings:
Harvard subject headings:
Freemasons--Europe, Central--History--19th century.
Freemasons--Europe, Central--History--20th century.
Secret societies--Europe, Central--History--19th century.
Secret societies--Europe, Central--History--20th century.
Princeton subject headings:
Freemasonry--Europe, Central--History--19th century.
Freemasonry--Europe, Central--History--20th century.
Secret societies--Europe, Central--History--19th century.
Secret societies--Europe, Central--History--20th century.