Complex sentence: In June 1944 Jerome's Center was closed and his family was transferred to Gila River War Relocation Center, where he drew "Looking at Center Picnic" and another untitled picture.
Split into simpler sentences: In June 1944 Jerome's Center was closed. He and his family were transferred to Gila River War Relocation Center, where he drew "Looking at Center Picnic" and another untitled picture.