Oyster harvesting - Wednesday, February 16 - Roger Davidson Jr., assistant professor at Coppin State University, will present "Tonging for Freedom: Black Oystermen & Economic Autonomy on the Chesapeake" at 7 p.m. at Maryland Hall for the Creative Arts, 801 Chase St. in Annapolis. The free lecture will focus on how oyster harvesting provided African-Americans an opportunity for equality in the 19th and 20th centuries. 410-295-0104, or go to www.Annapolismaritimemuseum.org.