Popper was born in Raab, Hungary to Josefine (née Leon) and Dr. Armin Popper.[2] She was educated in her native town, and began to write at an early age.[3] Besides contributing essays to various German and Hungarian periodicals, she published numerous volumes of stories and sketches.[4][5]
^Geißler, Max (1913). "Popper, Wilma". Führer durch die deutsche Literatur des 20. Jahrhunderts (in German). Weimar: Alexander Duncker Verlag.
^Brümmer, Franz (1895). "Popper, Wilma". Lexikon der deutschen Dichter und Prosaisten vom Beginn des 19. Jahrhunderts bis zur Gegenwart (in German). Vol. 5. Leipzig: Philipp Reclam. p. 527.
^Blumesberger, Susanne (2014). Handbuch der österreichischen Kinder- und Jugendbuchautorinnen (in German). Vol. 2. Vienna: Böhlau. pp. 899–900. ISBN978-3-205-78552-1. OCLC904640117.