""John and Sebastian Cabot: Heroes of American History"" is a biographical book written by Frederick A. Ober. The book tells the story of two explorers, John and Sebastian Cabot, who played a significant role in the discovery of North America. The Cabot family was originally from Italy, but they moved to England in the late 15th century. John Cabot, the father, was a merchant and navigator who was interested in finding a new trade route to Asia. In...