Statistics for occurrence #1 of “Gen. Fitz-John Porter” in entry fair-oaks-or-seven-pines-battle-of of Harper's Encyclopedia of United States History:

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In May, 1862, Gen. Fitz-John Porter was sent by General McClellan with a considerable force to keep the way open for McDowell's army to join him, which he persistently demanded, in order to venture on a battle for Richmond. Porter ha...
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