Dr Mackowiak and his writing partner Jane McHugh authored a paper re-writing antebellum US Presidential history. Their research solves the death of 3 presidents and Willie Lincoln the 11-year-old son of President Lincoln. McHugh and Mackowiak posit that a deposit of night soil near the White House's contaminated its water supply. The contaminated water that is linked to the deaths of presidents William Henry Harrison, John Polk and Zachary Taylor. Taylor and Harrison died in office, Polk died 3 months afte