June 4, 2015 7:00 AM EDT

June 4 is a big day in the history of American women: it was on this day in 1919 that Congress passed the 19th Amendment, which guaranteed them the right to vote.

The achievement was a long time coming, built on decades of hard—and, in some cases, contentious—work by scores of dedicated women and men. (It also, coincidentally, came six years to the day after another important moment in the history of worldwide women’s suffrage, the day that British suffragette Emily Davison was trampled to death by the King’s horse at Epsom.)

These 13 women—commonly known as suffragettes, though that term more specifically refers to a group of British suffrage supporters—were crucial to that cause.

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Write to Lily Rothman at lily.rothman@time.com.

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