I know that womens' suffrage reached Oregon in 1912 - you can learn a lot reading the cement squares that pepper the capitol mall in Salem. What I didn't know was that this initiative came up for vote in both 1908 (failed) and 1910 (failed), till it finally passed in 1912.

.. just showing how things don't just instantaneously "happen", there are often seeds sown along the way till the social climate is right..