January 27 is Thomas Crapper Day. Crapper was a well-known inventor, plumber and pioneer in the advancement of indoor plumbing. To read about Thomas Crapper, visit our Archive Section for these articles: "A PM Essay: Man And Myth - Behind Sir Thomas Crapper, 'Inventor' Of The Toilet,"August 2005; and "'Flush' Of Crapper Enthusiasts Rededicate Grave in England,"August 2002.