Statistics for occurrence #1 of “Mr. Seward” in chapter 25 of Alfred Roman, The military operations of General Beauregard in the war between the states, 1861 to 1865:

...han nominal, and thereafter very imperfect, to say the least of it, up to the close of the war. On the 1st of May, 1861, the British Minister at Washington was informed by the Secretary of State, Mr. Seward , that he had sent agents to England, and that others would go to France, to purchase arms for the United States. This fact was communicated to the British Foreign Office, which interposed no object...
Max. Freq. Min. Freq.
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