1800?-1831 1831 1896-1970 1902-1968 1904-1979 1925-2006 20thcentury americanfiction bellow biography depressedpersons depressivedisorder dospassos essays farrell historyandcriticism inliteratureturner john mailer mentalhealthstyron nat naturalisminliterature norman saul southamptoninsurrection steinbeck suicidalbehavior turner unitedstates william wm171s938d1990