Olive Pearl O'Brien, b: 1902 -

^{1929 The Great Depression begins}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}
^{1964 - 1973 Vietnam War}

^{1898 Spanish-American War}
^{1903 Wright brothers 1st plane flight}
^{1908 Ford produces Model T}
^{1913 Edison invents movies w/sound}
^{1914 - 1918 World War I}

^{1846 War w/Mexico,Calif & NM acquired}
^{1861 - 1865 Civil War, North vs. South}
^{1867 Alaska Territory purchased}
^{1869 Transcontinental Railroad complete}
^{1879 Edison invents phono/light bulb}



	^{Harmon Bittinger}^{b. d.}

^{Simon R. Bittinger}^{b.1900 d.1976}

	^{Mary Ellen Raley}^{b. d.}



	^{William Harris O'Brien}^{b. d.}

^{Olive Pearl O'Brien}^{b.1902 d.1942}		^{Aden C. Duckworth}^{b.1839 d.1898}

	^{Jaeanette Duckworth}^{b.1875 d.1942}	^{Dorcas Ellen Wilt}^b.1839 d.