Aug 22nd, 2013
Nov 2nd, 2012
Mar 28th, 2010
Feb 23rd, 2010
Jan 22nd, 2009
Nov 30th, 2008
Jul 10th, 2008
( projects.flowingdata.com)
Mar 14th, 2008
Jan 13th, 2008
Sep 2nd, 2006
Jun 28th, 2006
Dec 21st, 2005
May 23rd, 2005
Apr 30th, 2005
( www.history-magazine.com)
Jul 8th, 2004