Barbara Hillary, the first black woman on record to reach the North Pole, which she did at the age of 75, and the first to reach the South Pole, at the age of 79, died on Saturday in a hospital in Far Rockaway, Queens. She was 88.
Her death was announced on her website. A post on her Twitter account said her health had been declining in recent months. She had breast cancer in her 20s and lung cancer in her 60s.
It was not until 1986 that any woman had reached the top of the world, with Ann Bancroft, a physical education teacher and explorer from Minnesota, becoming the first. The first black man there was Matthew Henson, who, along with Robert E. Peary, set foot on the North Pole in 1909.
Ms. Hillary had retired from a 55-year career as a nurse when, seeking adventure, she went dog-sledding in Quebec and photographed polar bears in Manitoba. She then learned that no African-American woman had ever made it to the North Pole and challenged herself to become the first, though she had no funding and no organization behind her and had lost 25 percent of her breathing capacity from surgery for her lung cancer.