"Johann Philipp Eduard Gaertner (2 June 1801, Berlin – 22 February 1877, Flecken Zechlin, in Rheinsberg) was a German painter who specialized in depictions of urban architecture." - (en.wikipedia.org 15.02.2022)
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(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)