May 15 – “Climatic Change in Loudoun County” with Eugene Scheel
July 10 – “History of the Indian Mounds of Loudoun County and Northern Virginia Piedmont” with Eugene Scheel
May 15 – “Climatic Change in Loudoun County” with Eugene Scheel
July 10 – “History of the Indian Mounds of Loudoun County and Northern Virginia Piedmont” with Eugene Scheel