https://digital.katalog.queersearch.org/s/katalog/item/38990, “Keine Tochter aus gutem Hause: Johanna Elberskirchen (1864-1943)”, https://digital.katalog.queersearch.org/s/katalog/item/48763, QueerSearch, accessed 28. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/17502