Subseries contains several folders of material used by Thomas D. Murphy, former chairman of the Hawaii War Records Depository and professor in the history department at the University of Hawaii, in the preparation and research for his book Ambassadors In Arms (University of Hawaii at Manoa call number D769.31 100th .M8), published by the University of Hawaii Press in 1954. The majority (five folders) are published maps created by the War Department and other publishers representing areas of France and Italy traveled by the 100th Infantry Battalion. One folder contains aerial photographs of Italy and France showing significant topographical areas covered by the 100th Infantry Battalion. The final folder in the subseries contains hand drawn maps and overlays (also of Italy and France). The hand drawn maps are drafts of maps that eventually appeared in Murphy’s book, drawn by Tadashi K. Ohta. The overlays appear to originate from a different source and identify routes and positions of the 100th Infantry Battalion in Italy in 1944. These overlays do not directly correspond with any maps in the final version of Ambassadors In Arms.