Books like From the Tablets of Sumer
Samuel Noah Kramer
From the Tablets of Sumer is 323 pages, about 5 hours 55 minutes at 250 words a minute.
7 books to read next
How long each takes
Erinnerungen an Die Zukunft 3.7 h 
The Collapse of Complex Societies 4.6 h 
The Sirius Mystery 5.3 h 
Man Makes Himself 4.0 h 
The Lost Continent of Mu 6.2 h 
The Dawn of History 6.7 h 
In Pursuit of the Past 4.7 h Bar height shows length. Estimated at 250 words a minute.