River Kwai Railway: The Story of the Burma-Siam Railroad by C. Kinvig (2005)
These two books are considered the most rigorous in presenting how the railway was built and the workers and slaves were treated.
The famous illustrator Ronald Searle who drew cartoons for the New Yorker was a British POW of Japan on the Death Railway. Another British POW Jack Chalker was an accomplished artist who also recorded his experience through drawings.
To the Kwaiand Back: War Drawings 1939-1945 by Ronald Searle (2007)
The two most famous books, one fiction and one non-fiction, about POWs surviving the Thai-Burma Death Railway are:
Railway Man A POWs Searing Account of War, Brutality and Forgiveness by Eric Lomax (2008)
The Narrow Road to the Deep North by Richard Flanagan. Won the 2014 Man Booker Prize.