| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Erskine, Robert |
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| 173580, geographer and surveyor general to the American Revolutionary army, b. Dunfermline, Scotland. His several hundred detailed maps of the region W of the Hudson River, showing roads, buildings, and other details, were of much use to Gen. George Washington and remain historically valuable. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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