Check out Franz Josef Kallmann's haircuts throughout his career:
Franz Josef Kallmann had various haircuts during his lifetime. He was widely known as an outstanding psychiatrist and geneticist. Nevertheless, the German-American psychiatrist was particularly known for his unusual appearances and his adorable personality. Before his tragic death at age 68 he was often in the spotlight of the press due to his exceptionally haircuts. Check out Franz Josef Kallmann's classic haircuts right here: