Come celebrate Montgomery County's 238th birthday this Sunday, September 7, from 2:00 until 5:00 pm at the Beall-Dawon Historical Park at 111 West Montgomery Avenue, Rockville! In addition to tours of the historic 1815 Beall-Dawson House and Stonestreet Museum of 19th Century Medicine, kids and adults can participate in games and crafts, watch a performance by the Sharanya Dancers, or learn more about  the National Park Seminary Historic District in Forest Glen. And, of course, there will be a birthday cake!