Does anyone know a place in souther California where I can donate WWll memorabilia in honor of my fallen uncle who fell in Germany river Rhine

march air museum in riverside California

Maybe inquire with March Air Field museum or Richard Nixon Library in Yorba Linda.

The Museum Support Command of the California State Guard is actually set up to accept donations. There are three units in the state and the closest one in Los Alamitos.

Yes 215 and Van Buren Blvd, that is a great place, and his memory will be Honored there