Statistics for occurrence #1 of “Niagara” in chapter 2 of Jula Ward Howe, Reminiscences: 1819-1899:

...oems was often resorted to for my amusement, and I still remember how the young doctor read to me, Pity the sorrows of a poor old man, and how my tears came, and could not be hidden. The sight of Niagara caused me much surprise. Playing on the piazza of the hotel, one day, with only the doctor for my companion, I ventured to ask him, Who made that great hole where the water comes down? He replied...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Niagara (Missouri, United States) 2 0 0 0 0 user votes
Niagara 0 0 0 0 0 user votes
Niagara (Kentucky, United States) 0 0 0 0 0 user votes
Niagara (North Carolina, United States) 0 0 0 0 0 user votes
Niagara (North Dakota, United States) 0 0 0 0 0 user votes
Niagara (Oregon, United States) 0 0 0 0 0 user votes
Niagara (Pennsylvania, United States) 0 0 0 0 0 user votes
Niagara (Virginia, United States) 0 0 0 0 0 user votes
Niagara (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.