Willis J. Abbot,
The Naval History of the United States…
“ Fort Jackson was a huge (p. 894) star of stone and mortar. In its massive walls were great cavernous bomb-proofs in which the soldiers were secure from bursting shells. It stood back about a hundred yards from the levee, and its casemates just rose above the huge dike that keeps the Mississippi in its proper channel. When the river was high from the spring floods of the north, a steamer floating on its swift tide towered high above the bastions of the fort. In the casemates and on the parapets were mounted seventy-five guns of all calibres. ”
