The digital collection 100(0) Schlüsseldokumente zur russischen und sowjetischen Geschichte (1000 Key Ðocuments from Russian and Soviet History) has been created by institutions in Germany, Austria and Russia. You can only use a simple search mode. The digital collection has a twin sister, 100(0) Schlüsseldokumente zur deutschen Geschichte im 20. Jahrhundert (100(0) Key Documents for German History in the 20th century). The website can be viewed in German and Russian.