During the height of his own literary acclaim, Ezra Pound became notorious for supporting Mussolini, openly criticizing Franklin Delano Roosevelt during the war, and launching anti-Semitic tirades. Until now the depth and breadth of his many virulent views could only be imagined. This never-before-published correspondence began in 1937 and continued throughout Pound's incarceration at St. Elizabeths Hospital in Washington, D.C., where he was committed when he was found mentally unfit to stand trial for treason. It speaks to Pound's writing during this period -- including The Pisan Cantos -- and his interest in economics, politics, and history. It also reveals a poet unable to understand how wrong he had been about the history of his time, who continued to identify Catholics, Americans, Britons, Marxists, and Jews as enemies of humanity. Olivia Rossetti Agresti (niece of Dante Gabriel Rossetti and cousin of Ford Madox Ford) shared many of his pro-Fascist views but few of his hatreds. I Cease Not to Yowl will forever change the way we look at Ezra Pound.