We’re down to the Final Four in our Archives Treasures tourney. Our first semifinal promises to be a classic: the 1969 Black Panther protest photos against the 1980 Mount St. Helens eruption documents. You can vote for your favorite by using the online poll below. It closes Thursday at 9 a.m., so don’t forget to vote!

1969 Black Panther protest photos

1980 Mount St. Helens eruption documents

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