Britannica Educational Publishing 
Explorers of the Renaissance [PDF ebook] 

The allure of far-off lands, the promise of untapped resources, and a hunger for building global empires prompted Renaissance explorers to journey into the unknown. Battling harsh seafaring conditions, disease, and any number of unknown threats to their health and safety, the individuals profiled in this volume shaped the world map, setting the stage for future voyagers along the way.