YOUR FACT-CHECKERS were obviously having too much fun beta-testing all the equipment used in the “nasty” issue, because they made a major error in the timeline of political kinkiness(“Erotic City: A Sexual History of the District,” 7/28). James Buchanan was not president between 1834 and 1853. He was president between 1857 and 1861.

Silver Spring, Md.

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