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Bmam. Scan from Johann Christoph Brotze's book Sammlung verschiedner Lieflndischer Monumente Vorstellung des innern Schlothors des Rigischen Schloes ber welchem das Folio angefhrte Monument zu sehen die Ansicht University of Latvia Academic Library acadlib lv Johann Christoph Brotze PDold Johann Christoph Brotze Riga Castle