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	Ce média est dans le domaine public des États-Unis d’Amérique car son auteur est l’administration américaine comme précisé dans le code fédéral au Titre 17, Chapitre 1, Section 105. Pour en savoir plus : droit d’auteur. Attention : Ceci ne concerne que le travail du Gouvernement Fédéral et pas celui des États, ou d’une autre subdivision géographique ou politique du pays.
Ce fichier a été identifié comme étant exempt de restrictions connues liées au droit d’auteur, y compris tous les droits connexes et voisins.

https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse

...However, any copyright held by ACME that is still current would now be owned by CORBIS. In an attempt to determine if ACME registered any copyrights and if those copyrights were renewed, Specialists in the Prints and Photographs Division of the Library of Congress searched the Copyright Office files. It was found that only a few images were registered for copyright and those copyrights were not renewed. However, the Library’s legal office has advised the Division that photographs published with proper copyright notices between 1923-1963 may be protected if properly renewed, while works published after 1963 and unpublished photographs in the collection may be protected even if they were not registered with the Copyright Office. Additionally, researchers should be advised that determining the copyright status of photographs can be problematic because of the lack of pertinent information, and researchers often have to make calculated risk decisions concerning the appropriate use of an image when its copyright status is unknown or ambiguous.

— https://www.loc.gov/rr/print/res/220_acme.html