Missouri, St. Louis
Mallinckrodt Chemical Works Fine Prescription Chemicals
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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