Public Domain

Welcome to the Public Domain - Copyright Overview by Rich Stim - Stanford Copyright and Fair Use Center

• url: https://fairuse.stanford.edu/overview/public-domain/welcome/

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Understanding the Public Domain and Citation - Plagiarism.org

• url: https://www.plagiarism.org/blog/2018/02/27/understanding-the-public-domain-and-citation

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Public-domain-equivalent license - Wikipedia

• url: https://en.wikipedia.org/wiki/Public-domain-equivalent_license

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CC0 FAQ - Creative Commons

• url: https://wiki.creativecommons.org/wiki/CC0_FAQ

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Are the 0BSD and MIT-0 licenses public domain declarations? - Open Source Stack Exchange

• url: https://opensource.stackexchange.com/questions/14766/are-the-0bsd-and-mit-0-licenses-public-domain-declarations

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David Ahl places all his classic computing publications into the Public Domain « Adafruit Industries

• url: https://blog.adafruit.com/2022/06/16/david-ahl-places-all-his-classic-computing-publications-into-the-public-domain/
• topics: Public Domain, Retrocomputing, BASIC

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Llamasoft 8 bit games

• url: https://web.archive.org/web/20070629145455/http://www.medwaypvb.com/llamadloads.htm
• topics: Public Domain, Retrocomputing, Games

The public domain status is corroborated on the author's site from the same time period: https://web.archive.org/web/20070625105552/http://www.llamasoft.co.uk/softography.php

Commons:Pearson Scott Foresman - Wikimedia Commons

• url: https://commons.wikimedia.org/wiki/Commons:Pearson_Scott_Foresman

See also this example search, Search media - Wikimedia Commons