Statistics for occurrence #1 of “St. Charles, Mich.” in chapter 23 of Isaac O. Best, History of the 121st New York State Infantry:

... Lobdell, Unadilla, N. Y. H. E. Morgan, Clarkton, Mich. Adelbert J. Reed, Oviedo, Fla. Edward Tillinghast, Box 686, Camden, N. Y. G. M. Boom, Richmondville, N. Y. C. M. Butterfield, St. Charles, Mich. J. H. Brandon, Prairie Depot, Ohio. Perry F. Cole, Afton, N. Y. Henry M. Delong, Soldiers' Home, Milwaukee, Wis. Harrison Hadsell, South Valley, N. Y. E. M. Hunt, Roseboom, N. Y. J. E. Ho...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
St. Charles, Mich. (Michigan, United States) 3 3 3 3 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.