Morgan died yesterday afternoon at Yale-New Haven Hospital, where he was being treated for pneumonia, said his wife, Marie.
A professor emeritus at Yale University, he was a frequent contributor to The New York Review of Books and author of more than a dozen books, including "Birth of the Republic," ''The Puritan Dilemma" and "Inventing the People," winner in 1989 of the Bancroft Prize. His other awards included a National Medal of the Humanities in 2000 and an honorary citation from Pulitzer Prize officials in 2006 for his "creative and deeply influential body of work."
For decades, Morgan and Harvard professor Bernard Bailyn were cited as leaders of early American studies. Joseph Ellis, who studied under Morgan at Yale, dedicated his Pulitzer Prize-winning "Founding Brothers" to his former teacher. Gordon Wood, author of the Pulitzer Prize-winning "The Radicalism of the American Revolution," cited Morgan for often being ahead of his time.
Morgan wrote several books and essays about the country's founders, especially Franklin and George Washington, praising them not just as men of action but of inaction. He cited the "genius" of Washington in declining to seize power after the surrender of the British and found the seemingly sloppy Franklin a far more effective diplomat overseas than the ever-prepared John Adams.