Wikipedia articles needing clarification from July 2012

Louis Willems (25 April 1822, in Hasselt – 21 January 1907, in Hasselt) was a Belgian doctor, and one of the pioneers of bacteriology and immunology .

George Phydias Mitchell (May 21, 1919 – July 26, 2013) was an American businessman, real estate developer and philanthropist from Texas credited with pioneering the economic extraction of shale gas.