This image was acquired from
flickr. 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:
th century thcentury soviet union sovietunion boris souvarine borissouvarine russia portrait unidentified Boris Souvarine Papers Soviet Russia Photos graduateinstitute.ch Notes Portrait of an unidentified man who may be delegate to the IInd Congress of the IIIrd International. The back of the photo does not hold any mention. Unknown