Susan Wise Bauer books in order
6 books in the catalogue, about 67 hours of reading in all; the shortest takes 6 hours and the longest 16 hours.
6 standalone books in the catalogue.
Standalone books
The Story of the World, History for the Classical Child 7.7 h 
The Well-educated Mind 7.9 h 
The Well-trained Mind 14.9 h 
The Story of the World: History for the Classical Child: Volume 1: Ancient Times: From the Earliest Nomads to the Last Roman Emperor, Revised Edition 6.4 h 
The History of the Ancient World 15.9 h 
The History of the Medieval World 13.7 h