 In 1973, de Bretteville founded the Women's Graphic Center and co-founded the Feminist Studio Workshop (along with Judy Chicago and Arlene Raven), both based at the Woman's Building.She designed a necklace of an eye bolt on a chain, meant to represent "strength without a fist" as well as the biological symbol of women; she gave the first of these to Arlene Raven and Judy Chicago when they started the Feminist Studio Workshop in 1972.Since then she has given them to other women with whom she shares a vision of the creation of women's culture.