Between 1935 and 1940 she worked as the interracial education secretary for the YWCA of the United States. Williams was among a cadre of women—including Katharine Lumpkin, Juliette Derricotte, and Juanita Jane Saddler—charged with implementing the YWCA's interracial program.Jacqueline Dowd Hall, Sisters and Rebels: A Struggle for the Soul of America (New York: W.W. Norton, 2019). Under the auspices of the YWCA, Williams published a series of pamphlets aimed at introducing white girls affiliated with the YWCA with the lives, culture and politics of African American girls and women, including "Pudge and Her Friends," "Pudge Grows Up, and "Pudge Gets a Job," along with The Business Girl Looks at the Negro World.Judith Weisenfeld, African American Women and Christian Activism: New York's Black YWCA, 1905-1945 (Cambridge, MA: Harvard University Press, 1997): 197.
