Don't know if this question has come up before, but I was wondering if anyone has ever come across a copy of the signal book utilized by the United States Navy during the war? I've called Annapolis and they didn't know...which made me more curious; would assume a copy would have been in their collection. Does anyone know if a copy exists and WHERE it exists? I've done extensive searches to no avail. My interest began during an Intelligence course on the American Civil War at AMU, beyond my fascination with everything CW already.