 SOS carried out a project in 1983 called "End of the Rainbow, involving performance events in both the United States and Europe and culminating in an exhibition at Franklin Furnace in New York City from November 20-December 24, 1983.In her 1977 performance piece "Cancer Madness," Allyn grappled with her mother's cancer, her grandmother's madness, and her own health fears prompted by this family history.She performed in bed in her studio, which she had transformed to look like a hospital.