Collection includes correspondence, documents, photographs, and ephemera, primarily relating to the Mizuta family's incarceration at the Heart Mountain Relocation Center in Wyoming; clearance for family members to leave the incarceration center to operate a farm; and family members' military service during the war. Family members represented in the collection include Fred Mizuta, George Mizuta, Haruye Izuta, Ito Mizuta, and Nobuo Mizuta.