Macmillan, river, c.200 mi (320 km) long, rising in two main forks in the Selwyn Mts., E Yukon, Canada, and flowing generally W to the Pelly River. It was an important route to the gold fields from c.1890 to 1900.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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