- The Russian Church and Russian Dissent by (1887)
- "What the Orthodox Religion Really Is" by Leo Tolstoy (1904)
- The Orthodox Eastern Church by (1907)
- The Greek and Eastern Churches by (1908)
- Beasts in Cassocks: The Crimes of the Heads of the Russian Greek Catholic Orthodox Church in America, scandal-sheet by John F. Dudikoff (1924)
For the ecumenical councils, see Portal:Ecumenical Councils.