This collection includes correspondence, media, publications, photographs, manuscripts, documents, and other materials related to Aiko Herzig Yoshinaga's life and work related to activism and social justice. Subjects in the collection include Redress and Reparations, the Commission on Wartime Relocation and Internment of Civilians, Japanese American incarceration, and Aiko's personal life. Some material has been digitized and is available online.

This collection contains books, pamphlets, flyers, photographs, booklets, correspondence, periodicals, and oversized material related to Japanese Americans. Subjects in the collection include incarceration camps, Southbay local history, World War II propaganda, Japanese American families, incarceration camp pilgrimages, and other topics.