 Prior to the publishing of the manifesto , the FBI held numerous press conferences requesting the help of the public in identifying the Unabomber . They were convinced that the bomber was from the Chicago area ( where he began his bombings ) , had worked or had some connection in Salt Lake City , and by the 1990s was associated with the San Francisco Bay Area . This geographical information , as well as the wording in excerpts from the manifesto that were released prior to the entire manifesto being published , was what had persuaded David Kaczynski 's wife , Linda , to urge her husband to read the manifesto . 
