Statistics for occurrence #1 of “Fort McHenry” in chapter 16 of Benson J. Lossing, Pictorial Field Book of the Civil War. Volume 1.:

...regiment. They were ordered forward the next morning by the Northern Central Railway, to Baltimore, in company with about forty regular soldiers, who were going to re-enforce the little garrison at Fort McHenry . The battery of the Ringgold Artillery was left at Harrisburg. The muskets in the hands of the regulars, and thirty others borne by the volunteers, were the only weapons with which these prospect...
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