Richard H. Dukas, b: Private -

^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on moon}
^{1986 Nuclear disaster at Chernobyl}
^{1989 Berlin wall falls}

^{1912 Titanic sinks on maiden voyage}
^{1914 - 1918 World War I}
^{1922 USSR formed by Soviet states}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}

^{1869 Opening of Suez Canal}
^{1871 Franco - Prussian War}
^{1895 Marconi invents wireless telegraphy}
^{1899 Boer War begins}
^{1903 Wright brothers 1st plane flight}



		^{Max O. Dukas}^{b.1881 d.1956}

	^{Richard H. Dukas}^{b. Private d.}		^{Hugo Reinemann}^{b.1866 d.1945}

		^{Siddy nee Reinemann Dukas}^{b.1899 d.1997 Lugano, Switzerland}	^{Frieda nee Nachtigall Reinemann}^{b.1875 d.1957}

^{Mark R. Dukas}^{b. Private d.}



	^{Regina nee Garmandia Dukas}^{b. Private d.}