Dimensions: approx. 8 X 11 inches
Parke Davis & Company of Detroit, Michigan ran this paper advertisement that came from a 1951 magazine and features, Can you guess which are poisons? Barium Sulfide, Barium Sulfate, Mercurous Chloride and Mercuric Chloride. Ad tells how trained pharmacist know the actions and uses of each. Ad is dated on the page August 27, 1951.