Statistics for occurrence #1 of “Flag-Lieutenant S. W. Preston” in chapter 1.6 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4.:

...h;— the present commodore — he had an executive always ready to do his will, and in the best possible way. We had just lighted our pipes on the Ironsides for an after-dinner chat when Flag-Lieutenant S. W. Preston was announced, with orders for the commander of the Patapsco to report on board the flag-ship. On our way to the vessel Preston informed me that it was the intention of the admiral to attack Sumter...
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