On this day: Polio vaccine announced as safe and effective in 1955
On April 12, 1945, Franklin Roosevelt, the U.S. president for four terms, died in office, and Vice President Harry Truman took over.
Bill Haley and the Comets
On April 12, 1945, Franklin Roosevelt, the U.S. president for four terms, died in office, and Vice President Harry Truman took over.