Richard Imamura, screenwriter and producer of the new documentary film, “The Manzanar Fishing Club,” will be joined by fisherman Mas Okui, a former World War II inmate and local historian and author Stan Yogi, for a panel discussion on the film and the issues it confronts, at 5:30 p.m. at the California Historical Society Museum, 678 Mission St., S.F. Admission is free. Info: (415) 357-1848 or www.californiahistoricalsociety.org.