illustrator Hans von Römer (1896-1970) (brother) ;
Germany
Widmann, Walter (1883- after 1939) & Schütte, Karl (1898-1974): Welcher Stern ist das? (Stuttgart: Kosmos, 1939; at least 33rd editions, last editor: Herrmann, Joachim (*1931)) ;
illustrator -> Gustav Amelung ; illustrator -> Erich Haferkorn ; illustrator -> Hans-Hermann Kropf ; illustrator -> C. Ludeaux ; -> K. Porupsky ; illustrator -> Hans von Römer (1896-1970) ;
astronomical and technical drawing
https://www.klausbuergle.de/roemer.htm ;
The entire work of the Römer brothers, including many posters, is stored in the archives of the German Museum in Munich.
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