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CHNB Zug von Nordwesten Collection Gugelmann GSGUGEANONYMF.tif author Zug von Nordwesten Stahlstich Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEANONYMF helveticarchives ch aspx ID helveticarchives ch Swiss National Library Prints and Drawings Department Uploaded with GWToolset CHNB