Here are some of his most notable works:
* "The First Republic" (1946): This work is a two-volume masterpiece that covers the period from the American Revolution through the presidency of James Monroe.
* "The American Revolution" (1951): This is a concise but insightful overview of the American Revolution.
* "A History of the United States" (1964): This is a comprehensive history of the United States from its beginnings to the mid-20th century.
* "The Making of Modern America: Volume 1: From the Revolution to the Civil War" (1966): This is a volume focusing on the early period of American history.
He is also known for his other scholarly writings on American history, and he served as a professor at Columbia University for many years.
If you are interested in learning more about American history, especially the early republic period, I highly recommend checking out Mason Wiley Tyler's works.