2 Free Artworks of Peter Carl Ludwig Schwarz

"Portrait of Ludwig Schwarz, the artist's husband, professor of astronomy", Julie Wilhelmine Hagen-Schwarz, 1870
ludwig schwarz (astronomer)men with bow ties
А М Хаген Обсерватория Дерпта, August Matthias Hagen, before 1890
tartu old observatory in artaugust matthias hagen
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