The 'GAN' is a concept near impossible to define, and even harder to write. But that's not to say some brave writers haven't tried to 'paint the American soul'.
Ralph Waldo Ellison (1914-94) was born in Oklahoma. In 1936 he went to New York, where he met the writers Langston Hughes and Richard Wright; shortly afterwards his stories and articles began to appear in magazines and journals. His debut novel, Invisible Man (1952), won the National Book Award and established Ellison as a major figure in twentieth-century fiction.