American literature 8 Fiction 2 Attempted assassination -- 1 Authorship -- 1 Cryptographers 1 Freemasonry 1 Handbooks, manuals, etc 1 more ... Intelligence officers -- 1 Langdon, Robert (Fictitious character) 1 Presidential candidates -- 1 Prevention -- 1 Psychological literature -- 1 Psychology -- 1 Publishing -- 1 Rapp, Mitch (Fictitious character) -- 1 Social science literature -- 1 Social sciences -- 1 Terrorism -- 1 less ...