His publications include An Infinity of Nations: How the Native New World Shaped Early North America. Professor Witgen’s work explores the juxtaposition of Native and European experiences and responses to the process of mutual discovery that created the New World in North America, with a particular focus on the Great Lakes and Great Plains. His current book project Seeing Red: Indigenous Land, Black Lives, and the Political Economy of Plunder in North America examines the intersection of race, national identity, and state making in the Old Northwest of the early republic.