Columbia subject headings:
Freemasons--Austria--Vienna--History--18th century--Sources.
Freemasons--Austria--Vienna--History--18th century.
Freemasons. Loge Zur Wahren Eintracht.
Harvard subject headings:
Freemasonry--Austria--Vienna--History--Sources.
Freemasons--Austria--Vienna--Biography.
Freemasons. Loge "Zur Wahren Eintracht" (Vienna, Austria)--History--Sources.
Princeton subject headings: