The collection contains interview transcripts and tape recordings of Japanese Americans who lived while the Alien Land Law of 1913 was in place in California, as well as those who were evacuated to relocation centers and internment camps during World War II. The collection also contains newspapers written in Japanese and English, as well as sociological studies about Japanese Americans in Riverside. Also included in the collection are video cassettes related to the excavation of Riverside's Chinatowns.

The collection was created by Morrison Wong while working on his Ph.D. dissertation at UC Riverside in 1977.