"Sonnenburg concentration camp (German: Konzentrationslager Sonnenburg) was opened on 3 April 1933 in Sonnenburg (now Słońsk in Poland) near Küstrin (Kostrzyn nad Odrą) in a former ...
Neumark prison, on the initiative of the Free State of Prussia Ministry of the Interior and Justice.[a]
^ Geoffrey P. Megargee. "Encyclopedia of Camps and Ghettos, 1933–1945" (PDF). The Early National Socialist Concentration Camps. The United States Holocaust Memorial Museum. VIII (8 / 22) – via direct download.^ TK25 Sheet 3454 Sonnenburg - 1938 edition. Archived 2015-12-08 at the Wayback MachineCite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page)." - (en.wikipedia.org 23.05.2020)
- Latitude52.564445495605
- Longitude14.810000419617