Kubizek, a childhood friend and later biographer of his childhood experience with Hitler, wrote about Stefanie in his book, Adolf Hitler, My Childhood Friend.
August Kubizek, seorang teman dekat masa kecil dan kemudian biografer pengalaman masa kecilnya dengan Hitler, menulis tentang ketertarikan Hitler dengannya dalam buku buatannya, Adolf Hitler, My Childhood Friend.