The city of Portland and its surroundings, including the islands of Casco Bay, have inspired a wide range of art over the past 200 years. The "city by the sea," as Longfellow famously called it, has been a visual talisman for a host of artists, from early masters like Harrison Bird Brown and John Bradley Hudson to a remarkable roster of contemporary painters. Subjects include many of the city's signature buildings, including the Custom House and...