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:
Otto Neurath. en Otto Neurath he nli org il do vid NLI docId NNLARCHIVEAL The National Library of Israel collections Heinrich Hoffman Ein Jahr bayrische Revolution im Bilde Munich Photobericht Hoffmann copy in the Schwadron Collection of the National Library of Israel other versions Custom marker pdold Uploaded with Schwadron