Women’s History Month has its roots in Women’s History Week, which was created by congressional resolution co-sponsored by Orrin Hatch (R-UT) and Barbara Mikulski (D-MD) in 1981.  In 1987, the National Women’s History Project petitioned Congress for expansion of Women’s History Week to include the entire month of March.  They were successful and every year Congress passes a bipartisan resolution supporting National Women’s History Month.