St. Joseph of Optina Orthodox Church
Russian Orthodox Church Outside of Russia
History of the Russian Orthodox Church Abroad
The following link provides an excellent history about the formation of the Russian Orthodox Church Abroad.  It was written by St. John (Maximovich) of Shanghai and San Francisco and speaks to the history of the Church and how it derives from the Ukase of St. Tikhon. It covers the history of the Church up through the 1960s and reflects the political and ecclesiastical situation that existed up to that time.