1893 Map of Casco Bay

About this map

Portland stands at the heart of this maritime survey, illustrating the vital coastal infrastructure of Maine's largest harbor at the close of the 19th century. The coastal landscape is defined by a dense network of navigation aids and military installations, including the iconic Portland Head Light and the dual Cape Elizabeth Lights. Defensive positions like Fort Preble, Fort Scammel, and Fort Gorges guard the approaches to Portland, reflecting the strategic importance of this harbor. To the north and east, the islands of Casco Bay, such as Chebeag Id. and Haskell Id., are mapped in fine detail alongside the Grand Trunk Ry. corridor. The transition from the urban waterfront of South Portland to the rural shores of Bowery Beach captures the era's balance between industrial shipping and coastal settlement before modern development altered the shoreline.