Statistics for occurrence #1 of “Major-General John E. Wool” in chapter 16 of Historic leaves, volume 1, April, 1902 - January, 1903:

...his sketch was then the second lieutenant. This regiment went to Baltimore, Md., and was placed in the Railroad Brigade, middle department, under Major-General John A. Dix, and subsequently under Major-General John E. Wool , U. S. A. This Railroad Brigade was under Colonel Dixon S. Miles, U. S. A., whose headquarters were at Relay house, nine miles from Baltimore, on the main stem of the Baltimore & Ohio railhad...
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