This image is in the public domain, as it was originally published before 1978 without a copyright notice. According to the source information on the NDSU web site, it dates to the 1920s. No copyright notice appears. See also: [[:en:Wikipedia:Public domain#Published works|]].
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.
{{Information |Description = Photographic postcard of [[Former Sioux County Courthouse]], Ft. Yates, North Dakota |Source = North Dakota State University Libraries, Institute for Regional Studies, Ronald Olin North Dakota Postcard Collecti...
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