John Steinbeck's three novels Tortilla Flat, Cannr Row and Sweet Thursday are significant in the Steinbeck canon. Although having many elements typical of Steinbeck's fiction in general, these novels, which are referred to as the Monterey Trilogy, are unified by common elements that are either unique or handled in an unusual manner. These common elements are setting, tone, themes, structure, and characters. The novels are complementary and form a unified whole. Just as the setting reflects the evolution of Monterey over a period of almost thirty years, so do the other elements reveal a shift in emphasis or attitude indicative of Steinbeck's own changing attitudes. The concluding chapter discusses the particular significance of the Monterey Trilogy as a measure of Steinbeck's ability as artist and craftsman.