Statistics for occurrence #1 of “North Dakota” in entry blizzard of Harper's Encyclopedia of United States History:

...d for its high wind. extreme cold, and hard, sharp, fine crystals of snow. It appears first east of the Rocky Mountains on the plains of Canada, and sweeps into the United States through Wyoming, North Dakota , and Minnesota, but seldom prevails east of the Great Lakes, excepting when the ground has had a long covering of snow. It is a very dangerous storm, as the fine snow fills the air and prevents any...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
North Dakota (North Dakota, United States) 118 104 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.