Late 19th Century poverty map an early example of visual information design

Between 1886 and 1903 a British philanthropist, Charles Booth, and many volunteers, walked the streets of London to document the relative poverty and wealth of the city streets. The result was a colour-coded map which showed the complexities of poverty and that one third of the city inhabitants lived in poverty. The Booth Poverty Map was a precursor to today's homeless counts and an interesting example of visual information design.