John Snow Cholera Map

Dr. John Snow's map of the 1854 London cholera outbreak Cholera, John Snow and the Grand Experiment | Science | Smithsonian John Snow: A Legacy of Disease Detectives | | Blogs | CDC Dr. John Snow's map of the 1854 London cholera outbreak John Snow Wikipedia

How Often Does A Map Change The World? London Cholera Map of Dr John Snow's Cholera data in more formats « Robin's Blog File:Snow cholera map 1. Wikimedia Commons John Snow's cholera map of Soho Geoawesomeness