100 Prison Meditations: Cries of Truth from Behind the Iron Curtain
Amazon
https://www.amazon.com/gp/product/B004P8K2PG/
If Prison Walls Could Speak
Amazon
https://www.amazon.com/gp/product/B005FNHO1U
In God's Underground
Amazon
https://www.amazon.com/gp/product/B004IK9BD0
Richard and Sabina Wurmbrand
The Voice of the Martyrs
https://www.torturedforchrist.com/about/who-was-richard-wurmbrand/
https://www.torturedforchrist.com/
https://www.persecution.com/founders/
The Story of Richard Wurmbrand
Israel My Glory
https://israelmyglory.org/article/the-story-of-richard-wurmbrand/
Tortured for Christ
Amazon
https://www.amazon.com/Tortured-Christ-Richard-Wurmbrand/dp/0882643266
With God in Solitary Confinement
Amazon