An exhibition at the Museum of the City of New York in January 2012 which offers clues for future development of the city - "The Greatest Grid: The Master Plan of Manhattan 1811-2011." It shows how Simeon De Wittt, Governor Morris and John Rutherford laid out the plan for the city of New York in 1811. Because of the growth at the port New York City's population had grown quickly to 96,373. By 1870 the population had grown eight fold to 800,000. The grid plan used by the planners gave a sense of order to the city and it stretched north to 155th street. Upto that time most of New York was below Canal Street.