The Age of Innocence (1920) is a novel by Edith Wharton, which won the 1921 Pulitzer Prize. The story is set in upper class New York City in the 1870s.In 1920, The Age of Innocence was published twice; first in four parts, July - October, in the Pictorial Review magazine, and then by D. Appleton and Company as a book in New York and in London. Excerpted from Wikipedia, the free encyclopedia.