Statistics for occurrence #1 of “Mississippi river” in chapter 4 of Abraham Lincoln, Stephen A. Douglas, Debates of Lincoln and Douglas: Carefully Prepared by the Reporters of Each Party at the times of their Delivery.:

...ouri line of thirty-six degrees and thirty minutes, that Dred Scott, a slave in Missouri, was taken by his master to Fort Snelling in the present State of Minnesota situated on the West branch of the Mississippi river , and consequently in the Territory where slavery was prohibited by the Act of 1820, and that when Dred Scott appealed for his freedom in consequence of having been taken into a free Territory, the Su...
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