25 Jun 2019, 18:34 by [email protected]: > We must not publish scans of historical maps as our own work, that could > violate copyright. > But if we use the informations shown in historical maps for free hand > drawings, we do not violate the copyright for maps. > [citation needed] I am pretty sure that rewriting, redrawing, tracing and making other derivative works is not cancelling copyright on the original work. See https://commons.wikimedia.org/wiki/Commons:Derivative_works <https://commons.wikimedia.org/wiki/Commons:Derivative_works> for exploration about this topic in a bit different context, but nearly everything should be applicable and is describing situation well. https://en.wikipedia.org/wiki/Derivative_work <https://en.wikipedia.org/wiki/Derivative_work> is also relatively readable
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