Tap Code: The Epic Survival Tale of a Vietnam POW and the Secret Code That Changed Everything - Col. Carlyle Smitty Harris, Sara W. Berry
Could a tin cup and a water pipe keep you sane? Ask Captain "Smitty" Harris, one of the first American POWs in North Vietnam, held captive at the infamous "Hanoi Hilton." Using an old WWII communication method that he covertly taught other prisoners, they were able to endure abuse and solitary confinement by leaning on one another. 255 pages, hardcover from Zondervan.