Leo Frank, Superintendent of the National Pencil Co. in Atlanta, was lynched in Marietta on August 17, 1915. Frank had been found guilty two years earlier in the 1913 murder of National Pencil Co. worker Mary Phagan, 13. NOTE TO READERS: This gallery contains a graphic image from the 1915 Frank lynching. The image, which is Photo No. 6 in this gallery, Â is marked as "graphic content."