His first of three autobiographies, The Narrative of the Life of Frederick Douglass: An American Slave, was published in 1845. In 1847 he moved to Rochester, New York, and started working with fellow abolitionist Martin R. Delany to publish a weekly anti-slavery newspaper, North Star. Douglass was the only man to speak in favor of Elizabeth Cady Stanton's controversial plank of woman suffrage at the first women's rights convention in Seneca Falls, New York, in 1848. As a signer of the Declaration of Sentiments, Douglass also promoted woman suffrage in his North Star. Douglass and Stanton remained lifelong friends.