https://digital.katalog.queersearch.org/s/katalog/item/66625 and https://digital.katalog.queersearch.org/s/katalog/item/40009, “Lesbengeschichte im Nationalsozialismus - neue Spuren”, QueerSearch, accessed 29. April 2025, https://digital.katalog.queersearch.org/s/katalog/item/61486