This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Dr Jonas Edward Salk cropped. Dr Jonas Edward Salk creator of Salk polio vaccine at Copenhagen Airport flysas SAS Scandinavian Airlines PDDenmark personality Dr Jonas Edward Salk creator of Salk polio vaccine at Copenhagen Airport Files uploaded by Russavia Media from SAS Scandinavian Airlines Uploaded with VicuaUploader Jonas