Respuesta :
A book or magazine published before 1923 is no longer protected by copyright and may be reproduced and distributed by anyone without violating the law. A truism in American copyright is that works published in the US before 1923 are in the public domain.
As a practical matter, there would be little risk in digitizing any pre-1923 edition of the work. The putative copyright owner must establish with certainty that an authorized publication has occurred at a later date. As time passes, it becomes harder and harder to document the authorship of earlier works, and thus the likelihood of a complaint or lawsuit becomes less and less likely. But "this is in the public domain" and "this may be copyrighted, but I'm less likely to be sued."
Learn more about copyright:
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