Books like Factories of Death
Sheldon H. Harris
Factories of Death is 332 pages, about 6 hours 5 minutes at 250 words a minute.
11 books to read next
How long each takes
A Plague Upon Humanity 5.3 h 
Unit 731 Testimony 4.7 h 
Unit 731 8.2 h 
The Devil of Nanking 6.7 h 
The Comfort Women 5.3 h 
Killing the Rising Sun 7.0 h 
Prompt and Utter Destruction 2.6 h 
The Rising Sun 17.5 h 
No Surrender 4.0 h 
Hiroshima 3.5 h The Diary of Azuma Shiro 11.5 h Bar height shows length. Estimated at 250 words a minute.