Kenneth W. Haemer.
Range-Bar Charts.
In The American Statistician, vol. 2, no. 2, pp. 23, 1948.

Bibtex:

@Article{        haemer:1948:RBC,
  author = 	 "Kenneth W. Haemer",
  title = 	 "Range-Bar Charts",
  journal = 	 "The American Statistician",
  year = 	 "1948",
  volume = 	 "2",
  number = 	 "2",
  pages = 	 "23",
  month = 	 "April",
}