Following Onassis’ death in 1975 Jackie threw herself into her work. She served as a consulting editor for Viking Press and associate editor for Doubleday. She also continued to pursue the type of architectural and cultural preservation work that she had first embraced during her stint in the White House.
After suffering a fall from a horse in late 1993 Jackie’s health began to decline and she was subsequently diagnosed with non-Hodgkin lymphoma. By May 1994 the disease had spread to her liver, brain and spinal cord. That same month Jackie passed away in her sleep at the age of 64.