Death of Samuel Rowbotham - 23rd December 1884.
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=7368594Birth of Wilbur Voliva - March 10, 1870
Death of Wilbur voliva - October 11, 1942
https://en.wikipedia.org/wiki/Wilbur_Glenn_VolivaOn July 25, 1896, Ulysses Grant Morrow, a newspaper editor, conducted a similar experiment to Bedford Level on the Old Illinois Drainage Canal, Summit, Illinois.
https://en.wikipedia.org/wiki/Bedford_Level_experiment#Other_experimentsOn 11 May 1904 Lady Elizabeth Anne Blount performed the Bedford Level experiment.
https://en.wikipedia.org/wiki/Bedford_Level_experiment#Other_experimentsThomas Dolby (born Thomas Morgan Robertson; 14 October 1958)
https://en.wikipedia.org/wiki/Thomas_DolbyThomas Dolby releases album "The Flat Earth" on 28th February 1984.
https://en.wikipedia.org/wiki/1984_in_musicCharles K. Johnson died on March 19, 2001.
http://ncse.com/rncse/21/3-4/flat-earth-society-president-dies1876 Jan 17 - Hampden vs Walsh, court rules in favour of the flat earther over a Bedford Level wager.
http://www.vanuatu.usp.ac.fj/courses/LA313_Commercial_Law/Cases/Hampden_v_Walsh.htmlOct 1 1931 - In October edition of Modern Mechanix, Voliva offers $5000 to anyone who can prove earth is a globe. No one was able to claim the reward.
http://blog.modernmechanix.com/5000-for-proving-the-earth-is-a-globe/July 1st 1901 - John Alexander Dowie founds the city of Zion in Illionois, as a flat earth commune.
https://en.wikipedia.org/wiki/Zion,_Illinois[Rowbotham, Samuel B.] Zetetic astronomy. A description of several experiments which prove that the surface of the sea is a perfect plane, and that the earth is not a globe. Being the substance of a paper read before the Royal Astronomical Society on the evening of Dec. 8, 1848. By ‘Parallax' [pseud.]
http://www.loc.gov/rr/scitech/SciRefGuides/flatearth.html