Books like History of the Conquest of Mexico
William H. Prescott
History of the Conquest of Mexico is 713 pages, about 13 hours 4 minutes at 250 words a minute.
7 books to read next
How long each takes
Fifth Sun 6.2 h 
Aztec 13.8 h 
Aztecs 7.6 h 
The Aztecs Under Spanish Rule 12.1 h 
General History of the Things of New Spain 5.8 h 
Song of the Hummingbird 4.0 h 
The Broken Spears 3.6 h Bar height shows length. Estimated at 250 words a minute.