From an edition of Great Britain's Coasting Pilot.

Sea Chart - The Menai St. of Anglesey by Captain Greenville Collins | National Museums Liverpool

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https://www.liverpoolmuseums.org.uk/artifact/sea-chart-menai-st-of-anglesey-captain-greenville-collins

Sea Chart - The Menai St. of Anglesey by Captain Greenville Collins

http://content.liverpoolmuseums.org.uk/artifact/sea-chart-menai-st-of-anglesey-captain-greenville-collins