442nd Infantry Regiment & 100th Infantry Battalion (24 folders, 11x14 drop-front box) includes correspondence of Spark Matsunaga, former United States Senator and veteran of the 100th Infantry Battalion, regarding a speaking tour as well as a copy of a 1950 speech Matsunaga gave to the Senate Committee on Interior & Insular Affairs. The sub-subseries also contains several folders of press releases about the units, newspaper clippings, and poetry written by soldiers submitted for publication as well as publications by and about members of the 100th and the 442nd. There are also several folders that pertain to a written history of the 100th as well as a citation of the unit. The sub-subseries also includes operational, patrol, and other miscellaneous reports (mostly from the 100th). The sub-subseries also contains several folders of material used in preparation of Thomas D. Murphy's book about the 100th Infantry Battalion, Ambassadors in Arms, published by the University of Hawaii Press in 1954. The sub-subseries also contains brief biographical sketches of soldiers in the 100th Battalion, 1942 materials from the War Department regarding the presence of Americans of Japanese Ancestry in the military, and a publication of the Information Education Section of the MTOUSA titled "442nd Combat Team, 1943-1945." Finally, the sub-subseries contains a diary of Masiachi Goto, a 100th Infantry Battalion Soldier, kept between 1940 December 9 and 1945 August 16 and several sketchbooks kept by Yoshio Takamoto of 100th Infantry Battalion depicting scenes of the unit’s training in the United States as well as combat in Europe.