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CHNB Teufelsbrcke alte Collection Gugelmann GSGUGELAFONDE.tif Information Creator Simon Daniel Lafond Creator Gabriel Lory fils Teufelsbrcke alte Teufelsbrcke Aquatinta koloriert Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGELAFONDE helveticarchives ch aspx ID helveticarchives ch Swiss