[Face-research-list] set of emotional face images to use in an EEG study

Dear all, I am a Masters student at the University of Sussex and am about to start my dissertation project on mirror neurone response to emotional faces. I am currently trying to track down a set of emotional face images to use as stimuli. I had hoped to find a set in my department, but so far have had no luck. If someone could point me in the right direction I would be very grateful. Many thanks. Marieke