You can find files used for the current version of USA IAT on the PI UK site.
For the IAT task,
Good stimuli are: "Laughter", "Peace", "Glorious", "Happy", "Pleasure", "Joy", "Love", "Wonderful";
Bad stimuli are: "Terrible", "Failure", "Evil", "Horrible", "Agony", "Awful", "Hurt", "Nasty";
United Kingdom stimuli are: "London", "William Shakespeare", "uknote.jpg", "ukflag.jpg", "ukoutline.jpg";
United States stimuli are: "New York", "Abraham Lincoln", "usnote.jpg", "usflag.jpg", "usoutline.jpg";
The explicit questionnaire used the following sets of questions:
Right-Wing Authoritarianism
Social Dominance Orientation
The experiment procedure has been changed over years. You may contact Project Implicit at admin@projectimplicit.net for the previous versions.