Copyright expired because the work was published without a copyright notice and/or without the necessary copyright registration.
Licensing
Public domainPublic domainfalsefalse
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
No known restrictionsNo known restrictions on the publicationfalsefalse
This image was originally posted to Flickr by San Diego Air & Space Museum Archives at https://flickr.com/photos/49487266@N07/19919533746. It was reviewed on 2017-08-03 19:33:40 by FlickreviewR, who found it to be licensed under the terms of the No known copyright restrictions, which is compatible with the Commons. It is, however, not the same license as given above, and it is unknown whether that license ever was valid.
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