Statistics for occurrence #1 of “Mississippi River” in page 79 of John G. Nicolay, The Outbreak of Rebellion:

... improvise an army. Diplomatic agents were sent in haste to European courts. Measures were taken to thoroughly fortify the coast; permission was sought from the neighboring States to blockade the Mississippi River as high as Vicksburg and Memphis. The Confederate Congress was convened in special session; and on April 29th Jefferson Davis sent them his message, announcing that he had in the field, at Charlest...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† 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.