Harry Eastlack died at the age of 39 from Fibrodysplasia Ossificans Progressiva (FOP). FOP is a rare genetic disorder where bons forms in otherwise normal soft tisses of the body (i.e. muscle, ligaments, and cartilage). His skeleton is the only one of its kind on display in North America.
The Hyrtl Skull Collection reflects the work of Josef Hyrtl (1810-1894), a Viennese anatomist whose collection of 139 human skulls were studied to negate the claims of scientists who believed that cranial features were factors indicating differences in personality and intelligence often based on race. The Mütter Museum acquired the collection in 1874.