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CHNB Bern Mittelland Collection Gugelmann GSGUGEWISARDEE.tif Information Creator Elise Wysard Creator Franz Hegi Creator Hermann Trachsler Bern Mittelland Bern Aquatinta Swiss National Library CHNBCollection Gugelmann PDold User Swiss National Library GSGUGEWISARDEE helveticarchives ch aspx ID helveticarchives ch Swiss National