Mary , b:

^{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}


	^John Derr^{b.1843 ? d. ?}

	^Hiram Derr^{b.1845 ? d. ?}

	^Robert Derr^{b.1848 ? d. ?}		^J. E. Derr^{b. d.1895 44y 3m 15d}

	^James Derr^{b.1849 ? d. ?}

	^Sarah Derr^{b.1852 ? d. ?}

	^Lewis Derr^{b.1854 ? d. ?}

	^Simon Derr^{b.1856 ? d. ?}		^Mary^{b. ? d.1883 28y 10m 2d}

	^Susan Derr^{b.1856 ? d. ?}