Samuel Francis Du Pont's letter of April 12th 1862 to his wife, Sophie includes a reference to the 13 inch Seacoast Mortar as used during the reduction of Ft. Pulaski.

"One item has disappointed me-those great mortars are a dead failure; they did nothing at all, went wild, burst in the air, and caused no apprehension at all to the garrison. I am worried about this because this is the great dependence, those 13 inch mortars, that our friends in the Gulf are looking to, to reduce the forts in the Mississippi."