One of my favorite illustrators is Richard Johnson. If you search on his name on my blog site, you will see several different examples of his work I have highlighted before. Richard most recent infographic is titled Weapons and Mass Shootings. Here are Richard’s thoughts about creating this infographic. I’d like to say this one […]

Readers: When I first started blogging about data visualization in early 2013, one of the first posts I made was to show Richard Johnson’s eerily telling infographic 31 Days Later which depicted, using human shadow figures, how many gun-related deaths had occurred in the United States each day since the tragedy at Sandy Hook Elementary School. Mr. […]

Fred G. Johnson was an artist of circus sideshow banners whose career spanned 65 years. He designed advertisements for the Century of Progress Exposition, the 1933 World`s Fair held in Chicago; the city`s old White City and Riverview amusement parks; traveling shows throughout the country; and all the great circuses, including Ringling Brothers, Barnum & Bailey and […]

John Snow (1813–1858) is revered as a founding father of two medical disciplines. Anesthesiologists remember him as the physician who first made anesthesia scientific by showing how the human body responded to different doses of anesthetic drugs, and how anesthesia affected the human physiology. In addition, Snow the practicing anesthetist is widely known for the […]

Description and Significance Vibrio cholerae is a “comma” shaped Gram-negative bacteria with a single, polar flagellum for movement. There are numerous strains of V. cholerae, some of which are pathogenic and some of which are not. [SOURCE] The bacteria infects the intestine and increases mucous production causing diarrhea and vomiting which result in extreme dehydration […]

The Broad Street Pump had a long reputation of being a reliable source of clean well water. It extended 25 feet below the surface of the street, passing the layers of accumulated rubbish and debris that artificially elevated most of London. It stretched through a bed of gravel all the way to Hyde Park, down […]

Although he had no formal medical education, the epidemiology of cholera intrigued Reverend Whitehead. So who was this religious leader and how did he get interested in cholera? [SOURCE] REVEREND WHITEHEAD Reverend Henry Whitehead (1825-96), shown here in 1884 at age 59, was born on September 22,1825 in the seaside town of Ramsgate (middle center […]