The Wurmbrand Letters, by Richard Wurmbrand, is a 157 page book of letters written to church leaders about Christians suffering in prison.
Forbidden Sunday School
The Torchlighters: The Jim Elliot Story
The Torchlighters: The Adoniram and Ann Judson Story
A Story of Triumph
The Torchlighters: The Gladys Ayward Story
The Oracles of God