Along with his biographies, Frederick Karl wrote several volumes of literary criticism, among them American Fictions: 1940-1980. He also was general editor and volume co-editor of the Collected Letters of Joseph Conrad, five volumes of which have appeared. He taught at City College of New York, Columbia, and NYU. Karl died in 2004.
Modernist painters, writers, poets and composers are feared, maintains the author of Joseph Conrad: The Three Lives, because their creativity demands a reorientation of feeling and thinking that may threaten social cohesion. PW called this a "brilliant, dense cultural history."