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BMAm. Scan from Johann Christoph Brotze's book Sammlung verschiedner Lieflndischer Monumente Ruinen von Weienstein von der Abendseite Anno die Ansicht Ein Anno in den Ruinen von Sonnenburg auf Oesel gefundener Stempel Johann Wilhelm Ludwig von Luce Sigillum civitatis osiliensis das Siegel University of Latvia Academic Library