. Blue & Gray Navies: The Civil War Afloat, Annapolis, Md.: Naval Institute Press, .

From a note at the start of the index: "Note: Italicized page numbers indicate illustrations, tables, or photos; page numbers followed by the letter 'n' and a number refer to an endnote on that page."

Very many of the italicized page numbers do refer to tables, which list many ships, rather than photos or illustrations.