The Triumphant Church, from the writings of Richard Wurmbrand, John Piper, and Milton Martin, is a 143 page book that is an excellent tool for understanding the Persecuted Church around the world.
The Gospel Collection: The Gospel of John
Tortured for Christ: The Movie
The Witnesses Trilogy: God With Us
Heart of God
Gospel Tract and Booklet
The Gospel Collection: The Gospel of Matthew