1922 USSR formed by Soviet states 1939 - 1945 World War II 1945 Atomic bomb detonated (Hiroshima) 1950 Korean War begins 1964 - 1973 Vietnam War | 1895 Marconi invents wireless telegraphy 1899 Boer War begins 1903 Wright brothers 1st plane flight 1912 Titanic sinks on maiden voyage 1914 - 1918 World War I | 1830 French Revolution 1837 Queen Victoria assumes throne 1854 Crimean War with Russia 1869 Opening of Suez Canal 1871 Franco - Prussian War |
Paul Heller b.1891 d. | ||||||||
Vera Heller b.1925 d. | ||||||||
Doris Heller b.1928 d. | Alexander Bielschowsky b.1836 d.1904 | |||||||
Georg Bielschowsky b.1865 d. | Dorothea Haase b.1842 d.1930 | |||||||
Leonie Bielschowsky b.1899 d. | ||||||||
Klara Thom b.1873 d.1948, California | ||||||||