Helmer Holter, b: 1900 -

^{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}


		^{Johan Holter}^{b.1833 Norway d.1897}

	^{Henry Holter}^{b.1869 Coon Valley, Wisconsin d.1949}	^{Elina Nigara}^{b.1832 d.1906}

^{Helmer Holter}^{b.1900 d.1988}		^{Ole Pedersen}^{b.1845 Faberg, Norway d.1927}

	^{Emily Peterson}^{b.1874 Coon Valley, Wisconsin d.1931}	^Marie Olsen^{b.1845 Norway d.1916}





^Mabel Hoff^{b. d.}