Helen Gurley Brown, the legendary editor of Cosmopolitan magazine who many say helped bring about the sexual revolution, died Aug. 13 at 90.

Gurley Brown wrote Sex and the Single Girl (1962) about her single life, urging women to have sex freely, regardless of their martial status. She became editor at Cosmo three years later. She stayed in the position until 1997, when Bonnie Fuller replaced her.

Her longtime husband, David Brown, died at age 93 in 2010.