Robert Flynn Johnson, guest curator of the Bates College Museum of Art exhibition “DeWitt Hardy: Master of Watercolor,” will  speak at  5 p.m. Friday, Sept. 6, at the Bates College Museum of Art, 75 Russell St., Lewiston. A 6:30 p.m. reception will follow. Johnson had a long and distinguished career as curator of prints at the Achenbach Foundation, Fine Arts Museums of San Francisco, and remains active as a curator and author. Johnson is depicted above in the watercolor by Hardy, circa 2015. For more information, call 207-786-6158 or email museum@bates.edu.