- Christopher Columbus and the New World of His Discovery — Complete
- Christopher Columbus and the New World of His Discovery — Volume 1
- Christopher Columbus and the New World of His Discovery — Volume 2
- Christopher Columbus and the New World of His Discovery — Volume 3
- Christopher Columbus and the New World of His Discovery — Volume 4
- Christopher Columbus and the New World of His Discovery — Volume 5
- Christopher Columbus and the New World of His Discovery — Volume 6
- Christopher Columbus and the New World of His Discovery — Volume 7
- Christopher Columbus and the New World of His Discovery — Volume 8
- Days of the Discoverers
- The American Nation: A History — Volume 1: European Background of American History, 1300-1600
- The Dawn of Canadian History : A Chronicle of Aboriginal Canada
- Vikings of the Pacific: The Adventures of the Explorers who Came from the West, Eastward