Statistics for occurrence #1 of “Yukon” in entry klondike of Harper's Encyclopedia of United States History:

... the trade of their company. In 1873 the existence of gold in paying quantities was reported, in a region then supposed to be wholly within British Columbia. Miners penetrated farther towards the Yukon in 1882, and were successful in placer mining along the Stewart and other rivers. The first rush for the region began in 1887, when the Forty-Mile Creek was discovered and coarse gold found there. ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Yukon (Canada) 6 6 0 0 0 user votes
Yukon (Arkansas, United States) 0 0 0 0 0 user votes
Yukon (Georgia, United States) 0 0 0 0 0 user votes
Yukon (Missouri, United States) 0 0 0 0 0 user votes
Yukon (Oklahoma, United States) 0 0 0 0 0 user votes
Yukon (Pennsylvania, United States) 0 0 0 0 0 user votes
Yukon (Tennessee, 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.