Statistics for occurrence #1 of “Oregon” in chapter 1, page 146 of Cambridge History of American Literature: volume 3:

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The gold seekers got as far as Salt Lake over the Oregon Trail by Bear River; or from Ft. Bridger by the new way Hastings had found a little farther south, and more direct, through Echo Canyon. From Salt Lake the chief trail west led down the Humboldt Ri...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Oregon (Oregon, United States) 1,586 56 0 0 0 user votes
Oregon (Illinois, United States) 9 0 1 0 0 user votes
Oregon (Arkansas, United States) 0 0 0 0 0 user votes
Oregon (Kentucky, United States) 0 0 0 0 0 user votes
Oregon (Maryland, United States) 0 0 0 0 0 user votes
Oregon (Mississippi, United States) 0 0 0 0 0 user votes
Oregon (Missouri, United States) 0 0 0 0 0 user votes
Oregon (New York, United States) 0 0 0 0 0 user votes
Oregon (New York, United States) 0 0 0 0 0 user votes
Oregon (Ohio, United States) 0 0 0 0 0 user votes
Oregon (Pennsylvania, United States) 0 0 0 0 0 user votes
Oregon (Tennessee, United States) 0 0 0 0 0 user votes
Oregon (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.