Women in Missouri and across the U.S. gained the right to vote on this date in 1920, when the 19th Amendment to the U.S. Constitution became law. U.S. Secretary of State Bainbridge Colby certified the amendment, which took more than 40 years of legislative debate to enact, according to the Library of Congress.

Photo credit: Minor League of Women Votes, 12/12/23. , 1923. Photograph. https://www.loc.gov/item/2016836367/.