27 books • 11 series
Francisco Pizarro and the Conquest of the Inca (Explorers of New Lands) (Explorers of New Lands) (Explorers of New Lands)
Vasco DA Gama and the Sea Route to India (Explorers of New Lands) (Explorers of New Lands) (Explorers of New Lands)
Marco Polo and the Realm of Kublai Khan (Explorers of New Lands) (Explorers of New Lands)
Francisco Coronado and the Seven Cities of Gold (Explorers of New Lands) (Explorers of New Lands) (Explorers of New Lands)
Looking at the Land of Promise (Sherman & Mabel Smith Pettyjohn Lectures in Pacific Northwest History)