Career
Heinrich Harder, as a landscape painter exhibited paintings inspired by the scenery of Lüneburg, Mecklenburg, the Harz mountains, Sweden and Switzerland, at the Grosse Berliner Kunstausstellung in 1891. He also illustrated natural history articles These included a series accompanying Wilhelm Bölsche articles on earth history for Die Gartenlaube a weekly magazine.
He also illustrated 60 dinosaur and other prehistoric animal collecting cards for the Reichardt Cocoa Company, titled "Tiere der Urwelt" with accompanying text by Wilhelm Bölsche.