Document describing a collection of records held in the Minnesota Discovery Center Archives documenting the activity of the Butler Brothers and Hanna Mining Company.
Iron Range Research Center, 1005 Discovery Drive, Chisholm, Minnesota 55719
Rights Management
Use of the records described by this document is governed by U.S. and international copyright law. Please contact the Iron Range Research Center, Chisholm, MN for more information in regard to this material, online at http://www.mndiscoverycenter.com/research-center/archive