Books like Copperhead
Bernard Cornwell, Francisco Rodríguez de Lecea
Copperhead is 480 pages, about 8 hours 48 minutes at 250 words a minute.
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Settling Accounts 11.2 h 
Andersonville 14.1 h 
The Great War - Breakthroughs 9.3 h 
March 5.6 h 
Ordeal by Fire 12.7 h 
Enemy Women 5.9 h Bar height shows length. Estimated at 250 words a minute.