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CHNB Aargau Merenschwand Collection Gugelmann GSGUGEKNIGC.tif Information Creator Franz Niklaus Knig after Aargau Merenschwand Aargau Aquarell Sepia nach Josef Reinhard Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEKNIGC helveticarchives ch aspx ID helveticarchives ch Swiss National