2019 Pennsylvania American Innovation Dollar – Polio Vaccine
Posted in 2019 American Innovation Dollars, Series by DateThe 2019 Pennsylvania American Innovation Dollar (Buy on eBay) was the second regular issue of the series. The coin honored the discovery of the polio vaccine by Dr. Jonas Salk and his team. The University of Pittsburgh hired Dr. Jonas Salk in 1947 to develop a polio vaccine. At the time, this devastating disease was […]
