Analysis of information sources in references of the Wikipedia article "Macombs Dam" in English language version.
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A Mr. Robert Macomb [...] had succeeded in getting permission to erect a dam across the Harlem River, on condition that he should consturct[sic] the dam in such a manner as to allow vessels to pass and repass and not block the navigation of the stream. Of course Macomb promised everything before he got the permission, and, is usually the case, did nothing toward the fulfillment of his promises after he got it. He constructed the dam, but he made no provision for the navigation of the river. In brief, he blocked it with his dam