The Whitechapel District was located in the East End of London from 1855 to 1900, and was particularly known for criminal activity and poverty. (In 1900, the district became part of the Metropolitan Borough of Stepney.) The area gained notoriety from 3 April 1888 to 13 February 1891 for the Whitechapel murders committed by an unknown serial killer dubbed Jack the Ripper. The murderer killed eleven women (most of whom were prostitutes) and all cases remain unsolved. Related BRANCH articles: Heidi Kaufman, “1800-1900: Inside and Outside the Nineteenth Century East End” and Marlene Tromp, “A Priori: Harriet Buswell and Unsolved Murder Before Jack the Ripper, 24-25 December 1872”