She worked to increase the rate at which works of art by women are among museum collections. She helped found and was an active member of the Heresies Collective, which published the Heresies journal, to show and promote art made by women. She also joined the feminist cooperative gallery, A.I.R. Gallery (Artists In Residence), which held exhibits of Edelson's work, including The Memorial to the 9,000,000 Women Burned as Witches in the Christian Era. In that exhibit, the intention was to empower women attendees. She was also active in the civil rights movement.
