William Robert Shepherd (1871-1934) was an American cartographer and historian. A professor at Columbia University, where he specialized in American and Latin American history, Shepherd is best known for his Historical Atlas, published in several editions during the early twentieth century. He also wrote Hispanic Nations of the New World: A Chronicle of Our Southern Neighbors (1921). "At the time of the American Revolution most of the New World still belonged to Spain and Portugal, whose captains and conquerors had been the first to come to its shores. Spain had the lion's share, but Portugal held Brazil, in itself a vast land of unsuspected resources. No empire mankind had ever yet known rivaled in size the illimitable domains of Spain and Portugal in the New World; and none displayed such remarkable contrasts in land and people."