File:Gardner's Perfected Pharmaceutical Products ("American medical directory", 1906 advert).png
![File:Gardner's Perfected Pharmaceutical Products ("American medical directory", 1906 advert).png](https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/Gardner%27s_Perfected_Pharmaceutical_Products_%28%22American_medical_directory%22%2C_1906_advert%29.png/800px-Gardner%27s_Perfected_Pharmaceutical_Products_%28%22American_medical_directory%22%2C_1906_advert%29.png?20210308014427)
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