Document describing a collection of records held in the Minnesota Discovery Center Archives documenting the activity of the Butler Brothers and Hanna Mining Company.
Key providing information regarding the use of symbols on underground mine maps generated by and provided to the Minnesota Department of Conservation, now the Department of Natural Resources.
Document describing a collection of records held in the Iron Range Research Center Archives documenting the Administration of the Chippewa National Forest
United States Department of Agriculture; Chippewa National Forest; Wilderness; Forestry;
