Our History
Spinsters of San Francisco (SOSF) is a social nonprofit of young professional women making a positive difference in the Bay Area through volunteering and fundraising. We believe that when a diverse and close group of ambitious women come together, we can accomplish great things for our community.
21-40
age of members
100+
current members
1929
year founded
OUR VISION
SOSF aspires to unite remarkable women in the San Francisco Bay Area through an active social network where members develop meaningful friendships, support each other professionally, and make a lasting positive impact on our community.
SOSF was founded on November 6, 1929. Patricia Tobin (Mrs. Sheldon Cooper) hosted the first meeting in the ballroom of her grandparents’ home, the de Young house, at 1919 California Street. The Bachelors of San Francisco had already been formed, and the young women wanted to develop a sister organization. The first president was Harriet Brownell, who presided over the original membership of 35 young women.
95 Years Later
SOSF aspires to unite remarkable women in the San Francisco Bay Area through an active social network where members develop meaningful friendships, support each other professionally, and make a lasting positive impact on our community.
