CSM Friday Lecture Series: Letters from Home: Charles County in the 19th Century. March 14, 7 p.m., College of Southern Maryland, Center for Business and Industry, BI-113, La Plata Campus, 8730 Mitchell Rd, La Plata. As part of the CSM Friday Lecture Series, the Charles County 350th Celebration Committee in cooperation with the Charles County Heritage Commission presents Christine Arnold-Lourie, CSM history professor. Her lecture, Letters from Home: Charles County in the 19th Century, takes an intimate look into the lives, hopes, fears and dreams of everyday citizens as revealed through letters and correspondence of 19th century Charles County residents. Free. 301-934-7703 or 301-870-2309, ext. 7703 for Charles County; 240-725-5499, Ext. 7703 for St. Mary's County or 443-550-6169, Ext. 7703 for Calvert County or visit www.csmd.edu or www.explorecharlescomd.com/350th/.