Statistics for occurrence #1 of “Van Berkel” in entry revolution-diplomacy-of-the of Harper's Encyclopedia of United States History:

...mericans had opened negotiations with the States-General of Holland for a treaty as early as 1778. William, brother of Richard Henry and Arthur Lee, had begun the discussion of such a treaty with Van Berkel , the pensionary of Amsterdam. This negotiation with a single province was made in secret. Lee had no authority to sign a treaty, nor could the expression of a single province bind the Dutch Repub...
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