Issued by the United States in 1957, this 3¢ commemorative stamp pays tribute to the medical professionals, researchers, and volunteers who contributed to the fight against poliomyelitis. The design depicts a symbolic guardian figure standing protectively behind two children, with a shield featuring the Rod of Asclepius, representing medicine and healing. Printed in rose violet, the stamp reflects the nation’s gratitude during a time when the Salk and Sabin vaccines were turning the tide against polio. A significant issue for collectors interested in medical history, humanitarian themes, and mid-20th century U.S. commemoratives.