In the United States, Women's History Month traces its beginnings back to the first International Women's Day in 1911. In 1978, the school district of Sonoma, California participated in Women's History Week, an event designed around the week of March 8 (International Women's Day). In 1979 a fifteen-day conference about women's history was held at Sarah Lawrence College from July 13 until July 29, chaired by historian Gerda Lerner. It was co-sponsored by Sarah Lawrence College, the Women's Action Alliance, and the Smithsonian Institution. When its participants learned about the success of the Sonoma County's Women's History Week celebration, they decided to initiate similar celebrations within their own organizations, communities, and school districts. They also agreed to support an effort to secure a National Women's History Week.
In February 1980, President Jimmy Carter issued a presidential proclamation declaring the week of March 8, 1980, as National Women's History Week.