Nora Porter Boskoff, 86, a longtime volunteer, teacher and political activist in the Washington area, died Aug. 1 at a retirement community in Mill Valley, Calif., where she had lived for the past five years. She had congestive heart failure.

Ms. Boskoff was born in New York and was a graduate of New York University. After studying at Beth Israel Hospital School of Nursing in New York, she became a registered nurse in 1940 and worked as a nurse and health educator in New York.

She moved to Washington with her husband, Alexander Boskoff, in 1943. Over the years, she became active in supporting civil rights, nuclear disarmament, world peace and social justice.

With Bella Abzug and Dagmar Wilson, among others, Ms. Boskoff was one of the co-founders of Women Strike for Peace, a national organization that grew out of an international protest against atmospheric nuclear testing in 1961. She also worked with the Women's International League for Peace and Freedom and attended a NATO women's conference in London in the 1960s as a U.S. representative.

Ms. Boskoff, a longtime resident of Chevy Chase and later Takoma Park, took a leading role in establishing a foreign language program in Montgomery County elementary schools in the 1960s.

After receiving a teaching certificate from the University of the District of Columbia's Institute of Gerontology, she worked in the 1970s and early 1980s for United Cerebral Palsy of Washington, D.C., and Northern Virginia, teaching adults with disabilities. She also was a health educator for seniors at community centers and the Jewish Social Service Agency of Metropolitan Washington.

After moving to California, Ms. Boskoff organized Seniors for Peace, a group of senior citizens opposed to the war in Iraq. The group, which holds a weekly demonstration outside the retirement home in which Ms. Boskoff lived, is featured in a documentary film that has been shown on public television stations.

Ms. Boskoff's other interests included alternative healing, swimming, dancing and playing the piano. She enjoyed live theater and spending time with friends.

Her marriage ended in divorce.

Survivors include her companion, Miles Durr of Mill Valley; three daughters, Jane Graeven of Mendocino, Calif., Susan Boskoff of Reno, Nev., and Nancy Boskoff of Salt Lake City; and a grandson.

Nora Porter Boskoff was among those who created Women Strike for Peace.