[270]
Hoover wrote several books during his retirement, including The Ordeal of Woodrow Wilson, in which he strongly defended Wilson's actions at the Paris Peace Conference.[271] In 1944, he began working on Freedom Betrayed, which he often referred to as his "magnum opus". In Freedom Betrayed, Hoover strongly critiques Roosevelt's foreign policy, especially Roosevelt's decision to recognize the Soviet Union in order to provide aid to that country during World War II.[272] The book was published in 2012 after being edited by historian George H. Nash.[273]

Death

Hoover faced three major illnesses during the last two years of his life, including an August 1962 operation in which a growth on his large intestine was removed.[274][275] He died on October 20, 1964, in New York City following massive internal bleeding.