Statistics for occurrence #1 of “Washington, D. C.” in chapter 1.59 of Southern Historical Society Papers, Volume 35.:

...orgia and schoolship Patrick Henry. Thomas L. Moore, New York City-Born in North Carolina; midshipman U. S. N. lieutenant C. S. N.; served on Mississippi defenses and abroad. H. H. Marmaduke, Washington, D. C. —Midshipman U. S. N. lieutenant C. S. N.; served on steamer Virginia, battle of Hampton Roads, Drewry's Bluff naval battle, steamer Chattahoochie, abroad, steamer Samson, steamer Richmond. ...
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