Nancy Weiford is a leading authority on political assassinations of the 1960's, specializing in the John F. Kennedy assassination. Over more than five decades she has poured through documents from the National Archives and presidential libraries, amassed a coded name file for ease in making connections, conducted multiple 1:1 interviews with Dealey Plaza witnesses, relatives, police department personnel, Cuban exiles, informants and others who possessed important information about events surrounding the assassination. In particular, she has delved deeply into the activities of George de Mohrenschildt and both Michael and Ruth Paine. She has written extensively for research journals, given speeches and assisted several authors with their own research.