Potter had become tired of writing for children and increasingly unfamiliar with them. The Moore children (for whom she had written several tales early in her career) were grown, and Potter had not replaced them with other children, although she continued to write letters to child fans who had written her. She was out of touch with the interests of American children. Her marriage to William Heelis on October 15, 1913 effectively ended her literary and artistic career. Although she published sporadically in the years following her marriage, her works depended principally upon decades-old concepts filed away in her publisher's offices and ageing illustrations tucked away in her portfolio. Only "The Tale of Johnny Town-Mouse" (1918) brought forth a completely new set of illustrations from the artist. She devoted herself to marriage and farming, and avoided publicity and fans.