Original drugstore druggist trade vintage ad for the MALLINCKRODT CHEMICAL WORKS.  Office and plants were located in St. Louis, MO, New York, NY and in Montreal, Canada.  The sign of a progressive pharmacy. A. H. Reeves, owner of Reeves 57th Street Pharmacy, Inc., operates an open prescription department in a display window on this busy street.  Has attracted wide attention among 57th Street passersby.  ​This old 1952 one page medical advertisement would display beautifully matted and framed.