Statistics for occurrence #1 of “Barren River” in chapter 4 of Comte de Paris, History of the Civil War in America. Vol. 2.:

...sted and being well fed and well armed, struck the important line of railway between Nashville and Louisville near the famous grottoes called the Mammoth Cave. They destroyed the bridge which spans Barren River , and Buell's communications with the North were thus interrupted. For a few days Morgan scoured this line and destroyed it entirely, avoiding the troops in pursuit of him, falling unexpectedly upon...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Barren river (Kentucky, United States) 60 4 0 0 0 user votes
Barren River (Kentucky, United States) 24 2 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.