Statistics for occurrence #1 of “Chicago” in chapter 12, page 173 of John G. Nicolay, A Short Life of Abraham Lincoln, condensed from Nicolay and Hayes' Abraham Lincoln: A History:

...ty through Baltimore by a night train without previous notice. The seriousness of this information was doubled by the fact that Mr. Lincoln had, that same day, held an interview with a prominent Chicago detective who had been for some weeks employed by the president of the Philadelphia, Wilmington and Baltimore railway to investigate the danger to their property and trains from the Baltimore secessi...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Chicago (Illinois, United States) 3,613 37 281 1 0 user votes
Chicago (Wisconsin, United States) 0 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.