Statistics for occurrence #1 of “Washington, D. C.” in chapter 158 of Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 2.:

... and kindly cooperation, and trusting that the great reforms you meditate may ultimately receive that appreciation they merit, I am, very respectfully, your obedient servant, James M. Sanderson. Washington, D. C. , July 29, 1861.
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