By this time, Cather had been firmly established as a major American writer, receiving the Pulitzer Prize in 1923 for her World War I-based novel, "One of Ours". She followed this up with the popular "Death Comes for the Archbishop" in 1927, selling 86,500 copies in just two years, and which has been included on the Modern Library 100 Best Novels of the twentieth century. Two of her three other novels of the decade—"A Lost Lady" and "The Professor's House"—elevated her literary status dramatically. She was invited to give several hundred lectures to the public, earned significant royalties, and sold off the movie rights to "A Lost Lady". Her other novel of the decade, the 1926 "My Mortal Enemy", received no widespread acclaim—and in fact, neither she nor her partner, Edith Lewis, made significant mention of it later in their lives.