"Portland Harbor Maine", U.S. Coast Survey

A fine chart of Portland's harbor and its approaches, extending to Long Island. The interior is nicely developed to show terrain features including a street grid for Portland. Sailing directions provide ample guidance for mariners plus a listing of the locations of four lighthouses. The sea view profile at the bottom is from a distance of three miles. It clearly shows the town, plus locates the Portland Head lighthouse, Observatory, Bangs' Island, and White Head.

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Condition: B+

Issued folding, now pressed and backed with archival tissue. Full margins. The map has toning at two folds, mostly in upper left quadrant.