After years of practice and study, he wrote Amazing Face Reading, a guide to reading faces. One of his most notable articles, Nonverbal Communication: How to read what's Plain as the Nose...orEyelid...orChin...on Their Faces, was publishd int he Journal for Organizational Excellence. Mac's use of face reading has earned him a spot for three consecutive years as a speaker at the National Converence of the Society for Human Resource Management (SHRM). He has presented over 1500 talks on face reading to groups ranging from Fortune 500 companies to international meeting planners, the American Bar Association, International Association of Business Planners, the Interntional Factoring Association as well as doctors, dentists, psychologists, internal auditors, teachers, social workers, realtors, judges, artist, polygraph examiners, contractors, engineers and even hypnotists.