Photographs available at
www.audiovis.nac.gov.pl
are public domain or the owner of the copyrights is the State Treasury of Poland, represented by the National Digital Archive and which grant free of charge licence for free use of the materials on all known exploitation fields.
This work is in the
public domain
in the United States because it meets three requirements:
it was first
published
outside the United States (and
not
published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established
copyright relations
with the United States,
it was in the public domain in its home country (
Poland
) on the
URAA
date (1 January 1996).
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