The author of this image from Switzerland is unknown, and the image was published at least 70 years ago. It is therefore in the public domain in Switzerland by virtue of
Art. 31 of the Swiss Copyright Act.
Note that this applies only if a reliable source is cited to indicate that the author is not publicly known; just not knowing who the author is is not enough to qualify the image as public domain. This image may not be in the public domain in countries other than Switzerland.
{{Deutsch}} Breslauer Rathau um 1900. Quelle: [http://hdl.loc.gov/loc.pnp/ppmsca.01058] {{English}}
City hall of Wrocław in 1900. Source: [http://hdl.loc.gov/loc.pnp/ppmsca.01058] {{Polish}} Wrocławski ratusz w roku 1900. Źródło: [http://hdl.lo
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