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CHNB Blumenstein Bad von Norden gegen das Stockhorn Collection Gugelmann GSGUGESPRNGLINB.tif Information Blumenstein Bad von Norden gegen das Stockhorn Blumenstein Federzeichnung Aquarell Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGESPR NGLINB helveticarchives ch aspx ID helveticarchives