During this time, Tugwell wrote several books, including a biography of Grover Cleveland, subtitled: A Biography of the President Whose Uncompromising Honesty and Integrity Failed America in a Time of Crisis (1968).
Während dieser Zeit schrieb Tugwell mehrere Bücher, darunter eine Biografie über Grover Cleveland mit dem Untertitel A Biography of the President Whose Uncompromising Honesty and Integrity Failed America in a Time of Crisis (Macmillan Company, New York (1968)).