Mark Arthur Byerly, b: 1930 -

^{1964 - 1973 Vietnam War}
^{1969 Armstrong first person on the moon}
^{1973 US launches Skylab space station}
^{1981 Columbia is first space shuttle}
^{1991 Persian Gulf War}

^{1914 - 1918 World War I}
^{1929 The Great Depression begins}
^{1939 - 1945 World War II}
^{1945 Atomic bomb detonated (Hiroshima)}
^{1950 Korean War begins}

^{1879 Edison invents phono/light bulb}
^{1898 Spanish-American War}
^{1903 Wright brothers 1st plane flight}
^{1908 Ford produces Model T}
^{1913 Edison invents movies w/sound}



		^{Arthur Ira Byerly}^{b.1902 Washington Township, d.1985}

^{James Mark Byerly}^b.1949 d.	^{Mark Arthur Byerly}^b.1930 d.		^{Alvin Gurney Hoffman}^{b.1875 Lykens Township, d.1934}

^{Randolph Ira Byerly}^b.1951 d.		^{Mabel Pauline Hoffman}^{b.1908 Washington Township, d.1992}	^{Amanda Elizabeth Troutman}^{b.1879 Lykens Township, d.1975}

^{Anne Marie Byerly}^{b.1954 Jackson Township, d.}

^{Kathy Susan Byerly}^{b.1957 Jackson Township, d.}

^{Joanne Jean Byerly}^b.1959 d.	^{Grace Rebecca Hoffman}^b.1927 d.