This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1930.
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https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse

• 2006-11-18 00:27 SuperGirl 202×319× (6389 bytes) Both photographer and subject are dead >70 years. Public domain. http://www.math.uni-hamburg.de/home/grothkopf/fotos/math-ges/ {{PD-old-70}}