Missouri, St. Louis Mallinckrodt Chemical Works Fine Prescription Chemicals {white etched} {T1-2} C1571T3-23 1920 Census: Emil Mallinkrodt age: 59 born about v1861 in Missouri. Occupation: Chemis Chemical Co. Wife: Louise Mallinckrodt Age: 47 Son: Charles Mallinckrod Age: 12 Son: Lawrence Mallinckrod Age: 10 |