Panoramic views of Gloucster Harbor do give a better sense of just how large it was, but none of those found really seem to have been able to show it all. Most of those appear to have been taken from Rocky Neck.
This panoramic view was included in a 1905 Gloucester viewbook.
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An undated panoramic view that has been tinted.
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A panoramic view of Ten Pound Island.
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Another early 1900 Gloucester viewbook scene -- shows more foreground than the tinted version.
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