Throughout the time he was creating his greatest work, Steinbeck faithfully kept a journal revealing his arduous journey toward its completion.The journal, like the novel it chronicles, tells a tale of dramatic proportions—of dogged determination and inspiration, yet also of paranoia, self-doubt, and obstacles. It records in intimate detail the conception and genesis of The Grapes of Wrath and its huge though controversial success. It is a unique and penetrating portrait of an emblematic American writer creating an essential American masterpiece.