This interview with disability rights activist, Judith Heumann, was conducted on October 12, 2007, as a supplement to her earlier lengthy biographical oral history [https://ucblib.link/OHC-JudithHeumann]. Ms. Heumann discusses important roots of her civil rights perspective on disability issues, her developing cross-disability perspective, and her role in the growth of a national network of disability leaders and organizations, leading to the founding of the American Coalition of Citizens with Disabilities [ACCD] in 1975. The interview focuses on the planning for the nationwide demonstrations in support of implementation of Section 504 of the Rehabilitation Act of 1973, a crucial step in federal protection for disability rights. She discusses in depth the four-week long 504 sit-in at the Federal Building in San Francisco, a groundbreaking civil rights action that had lasting impact not only on disability law but on the political and social outlook of the disability community. She describes the sit-in leadership, life inside the building for disabled activists, and help from outside groups like the Black Panthers and labor groups. Subsequently, Ms. Heumann led the delegation from the San Francisco protest to Washington DC, and she discusses the numerous actions there, which culminated in the issuing of the implementing regulations by HEW secretary Joseph Califano. The victory in the 504 battle helped embed the concept of disability rights in the disability community and was precursor to the Americans with Disabilities Act of 1990.