Keywords: Duchess Helene of Mecklenburg-Strelitz.jpg Helene zu Mecklenburg -Strelitz en Duchess Helene of Mecklenburg-Strelitz http //www galitzinelibrary ru/ id 29 sub 11 author ~ 1870 PD-old Duchess Helene of Mecklenburg-Strelitz House of Saxe-Hildburghausen Saint Petersburg Lyceum 344 |