Statistics for occurrence #1 of “Plank” in chapter 6.42 of Southern Historical Society Papers, Volume 6.:

...on. The circumstances under which I acquired the right to give testimony in the matter were somewhat remarkable, and I here give a full statement of them. The left of my brigade line lay near the Plank road at Chancellorsville, and, after night had fallen, I rode forward, according to my invariable habit, to inspect my picket line. The moon had risen and partially illuminated the woods. I began...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Plank (Pennsylvania, United States) 850 106 0 0 0 user votes
Plank (Kentucky, United States) 104 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.