Category: Henry Whitehead
DataViz History: The Ghost Map: Building a Case and The Pump Handle
DataViz History: The Ghost Map: Index Case at 40 Broad Street
DataViz History: The Ghost Map: Miasma Theory
DataViz History: The Ghost Map: Vibrio cholerae
DataViz History: The Ghost Map: The Broad Street Pump
Michael Sandberg's Data Visualization Blog 