Chart of Belfast Bay, 1882
This is a detail of the Penobscot River and Belfast Bay Maine chart, published by the U.S. Coast Survey in 1882. Details on the chart include where there are and aren't trees, as well as the first bridge at the head of the harbor. The granite beacon on Steel's Ledge at the mouth of the harbor is still in position, but now there is a bell buoy off the ledge that marks the harbor entrance.
The bridge at the head of harbor is the first one; a second one followed in 1923, and an elevated bridge was built in the 1960s. The 1923 bridge is now a footbridge.