”Treasures of State: Maryland’s Art Collection” — through Oct. 22, Washington County Museum of Fine Arts, 401 Museum Drive, Hagerstown. This collaborative exhibition, co-organized with the Maryland State Archives, features over 90 American and European paintings, sculptures, works on paper, and decorative arts from 1750 to present. Notable artists represented include the Peales, Jasper Cropsey, Thomas Wilmer Dewing, George Inness, Hugh Bolton Jones, Eastman Johnson, Giuseppe Ceracchi, and Giovanni Battista Piranesi. 10 a.m. to 5 p.m. Tuesday through Friday, 10 a.m. to 4 p.m. Saturday and 1 to 5 p.m. Sunday. 301-739-5727 or wcmfa.org.

“WillyVision2020” — through Oct. 22, Hyattstown Mill, 14920 Hyattstown Mill Road, Hyattstown. Featuring paintings, drawings and collages by Willy Fish Yowaiski. Hours are 10 a.m. to 4 p.m. on Saturdays and Sundays. 301-830-1142.