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EVB2933005: Vivian Alfretta Dandridge (1921-1991), was an African American singer and actress, was the sister of actress Dorothy Dandridge and the daughter of character actress Ruby Dandridge. She was a member of the Dandridge Sisters musical group, along with Etta Jones and Dorothy Dandridge. 1955 / Bridgeman Images
EVB2936572: Hospital staff are examining a patient in a tank respirator, iron lung, during a Rhode Island polio epidemic. The iron lung encased the thoracic cavity externally in an air-tight chamber. The chamber was used to create a negative pressure around the thoracic cavity, thereby causing air to rush into the lungs to equalize intrapulmonary pressure. c. 1960 / Bridgeman Images