(Public domain by age as first published before 1923. Alternative, in public domain as being originally published before 1978 without copyright notation. Source information at the NDSU web site (link above) dates the photograph to the period between 1912 and 1920.)
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
The original description page was here. All following user names refer to en.wikipedia.
2012-07-22 22:12 Cbl62 587×384× (88541 bytes) {{Information |Description=Photographic postcard of [[Pembina County Courthouse]], [[Cavalier, North Dakota]] |Source=Pembina County Historical Society Photograph Collection http://www.digitalhorizonsonline.org/cdm4/item_viewer.php?CISOROOT=/ndshs-dm&C...
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