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09/10/1873 Charles R. Walgreen, the father of the modern drugstore, is born

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Walgreens: 100 Years in 100 Seconds

Charles Walgreen was a pharmacist, who originally worked for Isaac Blood. When Blood retired, Walgreen bought the store from him and then he opened even more stores, which he incorporated as Walgreen Co. Nowadays, Walgreen is the 2nd largest pharmacy store chain in the United States.