In 1941, the Jewish artist Hannelore Baron arrived in New York. She had traveled from Germany, where her father’s fabric shop was closed down by the Nazis. On Kristallnacht, she watched him get beaten so brutally he left a bloody imprint of his hand on the family’s living room wall. Those images never left Baron. Rarely going out, she led a quiet life of mental anguish in the Bronx, where she spent her days creating elegant collages that channeled the horrors of the war. Baron died at 60, in 1987. She never became famous but her oeuvre is now resurfacing in New York art circles. This powerful exhibition of box assemblages, collages, and monoprints on paper includes 56 works dating from 1970 to 1986. —Elena Clavarino