Photo Querbach.
Link to resources for Kreis Löwenberg http://doris-baumert.de/
Adress Löwenberg 1930/31: https://bibliotekacyfrowa.pl/Content/128810/PDF/0462508-1930-1931.pdf
Prox and Gringmuth names in gedbas.genealogy.net/persondatabase/1095 with submitter Karl Wilhelm Bödecker.
Extractions from Schlesien: http://www.wimawabu.de/PDF_Dateien/_Datenbank_andere_Orte.pdf