With the development of the Omaha Stockyards and neighboring packinghouses in the 1870s, several workers' housing areas, including Sheelytown, developed in South Omaha. Its growth happened so quickly that the town was nicknamed the "Magic City". The latter part of the 19th century also saw the formation of several fraternal organizations, including the formation of Knights of Aksarben. City leaders rallied for the creation of the Trans-Mississippi Exposition in 1898. During the Expo, famous madames Anna Wilson and Ada Everleigh were making a good living from the crowds. At the same time, Boss Tom Dennison compounded the city's vices in the notorious Sporting District, with the full support of eight-term mayor "Cowboy" James Dahlman. Many of these early pioneers are buried in Prospect Hill Cemetery. City leaders created Omaha University in 1908.