Brief History of the 14th Marine Regt (the Artillery Regt of the 4th MarDiv) including all it's WWII operations. http://www.marines.mil/news/publications/Documents/A%20Brief%20History%20of%20the%2014th%20Marines%20PCN%201900031080_2.pdf
4th MarDiv Operations Report Iwo Jima, Annex Division Artillery: Annex Item to Fourth Marine Division operations report, Iwo Jima : Division artillery report. :: World War II Operational Documents