Statistics for occurrence #1 of “Mississippi” in chapter 13 of Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 2.:

...e present moment — nobody can see where its population is most dense and growing — without being ready to admit, and compelled to admit, that ere long America will be in the valley of the Mississippi . Well, now, sir, I beg to inquire what the wildest enthusiast has to say on the possibility of cutting off that river, and leaving Free States at its source and its branches, and Slave States do...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Mississippi (United States) 3,760 16 0 0 0 user votes
Mississippi (Mississippi, United States) 5,101 68 1 0 0 user votes
Mississippi (Canada) 2 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.