Lilly, who is childless, began writing poetry in the mid-1930s, said her attorney, Thomas Ewbank. She "did not take personally" the rejections from Poetry and proved to be a fan and loyal contributor, establishing in 1986 its annual Ruth Lilly Poetry Prize, which was initially $25,000 and has grown to $100,000. She also has sponsored two $15,000 annual fellowships via the magazine, as well as a professorship in poetry at Indiana University.