Presentations and displays that celebrate and explore the geography of a slave's life, freedom and self-image with speakers Laura Wright Anderson of the Sandy Spring Slave Museum; Arabella Grayson, a collector of vintage black paper dolls; and Raymond Dobard of Howard University. 10:30 a.m. Saturday. Wheaton Library, 11701 Georgia Ave., Wheaton. 240-777-0678.
The Puppet Co.
A puppet production of the classic tale "The Wizard of Oz." 10 a.m. and 11:30 a.m. Wednesdays, Thursdays and Fridays, 11:30 a.m. and 1 p.m. Saturdays and Sundays. Glen Echo Park, 7300 MacArthur Blvd., Glen Echo. $6. 301-320-6668.
Father's Day Picnic
The National Center for Children and Families hosts its third annual "Family Celebration of Father's Day," a picnic featuring a barbecue dinner, moon bounce, music with a live DJ and gospel choir. There also will be a dunk tank, miniature golf and a basketball contest. The event will focus on the Family Ties program, which helps children with incarcerated parents. 1-6 p.m. Sunday. Smokey Glen Farm, 16407 Riffleford Rd., Gaithersburg. Call 301-365-4480 for prices.