In 1971 Rosemary became a charter member of the West Australian chapter of Zonta International. Zonta was primarily a volunteer organisation that believed “we all have an inherent responsibility to make a meaningful difference in our community.”

In 1972 a sub-committe was formed to help send two of its members to fly in an all-women’s air-race across the United States of America. These two members were Robin Miller and Rosemary de Pierres.

You can read an account of the inauguration, who the inaugural members were, and the race, on their history page.