Calais, Maine

Longitude Determination
Harold E. Nelson
14 Hill Avenue,
Newport, ME 04953

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Here is a diagram that shows the major longitude stations in the US by 1897.  Note that Calais and Duxury are the 'ports of entry' for telegraphic longitude on the east coast and on the west coast, it's San Francisco.

US Longitude Network
Click Photo for Enlarged View

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