 She left the paper the following year to concentrate on novel writing, publishing four more during her lifetime.At the instigation of the "New-York Tribune"'s city editor, Stanley Walker, she also began writing nonfiction.Her first book, "Ladies of the Press" (1936), was the first formal history of women in journalism, examining the various roles women have played in print journalism, with a focus on famous journalists like Margaret Fuller, Nellie Bly, and Dorothy Dix.