Years before it became a full month, there was Women's History Week.

In 1978, Sonoma County, Calif., held the first known Women's History Week to align with International Women's Day.
READ MORE HERE:
https://www.npr.org/2023/03/02/1160430549/womens-history-month-grew-out-of-a-weeklong-commemoration-by-jimmy-carter-in-198