Genevieve Foster books in order
8 books in the catalogue, about 41 hours of reading in all; the shortest takes 2 hours and the longest 7 hours.
8 standalone books in the catalogue.
Standalone books
George Washington's World 6.4 h 
Abraham Lincoln's World 6.6 h 
Augustus Caesar's World 6.1 h 
Birthdays of Freedom from Early Man to July 4, 1776 2.4 h 
The World of Captain John Smith 7.5 h 
The World of Columbus and Sons 7.5 h 
The World of William Penn 3.5 h 
The Year of the Horseless Carriage, 1801 1.8 h