(AP) — Marion Helzberg Bloch, a philanthropist and wife of H&R Block co-founder Henry W. Bloch, has died at the age of 83.The family said she died Tuesday at her home in Mission Hills. Her son, Thomas Bloch, said his mother’s health had slowly declined since she was diagnosed with a brain tumor at age 58.

Marion Bloch helped her husband while he and his brother, Richard, built H&R Block into the nation’s largest commercial tax-preparation firm.

The Marion and Henry Bloch Family Foundation gave generously to many area institutions, including the Nelson-Atkins Museum of Art and St. Luke’s Hospital.

The funeral services will be private but a public memorial service will be held at the Atkins Auditorium at the Nelson gallery at 2 p.m. Monday.