SlideShow

  • April 22, 1955 - Presentation of citations by Eisenhower to Dr. Salk and Mr. O'Connor.
  • April 22, 1955 - Dr. Jonas Salk, discoverer of the polio vaccine.
  • April 22, 1955 - Presentation of citation by Eisenhower to Dr. Salk and Mr. O'Connor.

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