Dr. Louis Heyl added Washington and Jefferson College to Universities
Dr. Louis Heyl added Hahnemann Medical University to Universities
Dr. Louis Heyl added West Virginia University to Universities
Dr. Louis Heyl removed Pennsylvania Medical Association from Professional Affiliations
Dr. Louis Heyl removed American Medical Association from Professional Affiliations
Dr. Louis Heyl removed Allegheny County Medical Society from Professional Affiliations
Dr. Louis Heyl added Pennsylvania Medical Association to Associations
Dr. Louis Heyl added American Medical Association to Associations
Dr. Louis Heyl added Allegheny County Medical Society to Associations
Dr. Louis Heyl updated Western Pennsylvania Hospital from Work Experiences
Dr. Louis Heyl updated Western Pennsylvania Hospital from Work Experiences