Artwork, 1955-1956, created by Lauri Leskinen, an artist and native of Mohawk, Michigan. Includes graphic material for reproduction, composed only of black and white as well as photographs of Calumet and Hecla mining operations. Created for "The Red Metal News," a monthly newsletter published by and for the employees of the Calumet Division of Calumet and Hecla, Inc.

Records, 1908-1940, of the Traprock Valley Grange No. 1316, located in Houghton County, Michigan. Includes subordinate grange record book, dues account and roll books, quarterly reports, dues receipt books, bills, receipts and correspondence as well as a ritual manual and Journals of Proceedings publications.

Record books, 1918-1941, of the United States Navy. Two volumes are logs for the Navy Radio Station NUG in Calumet, Michigan. Formerly operated by the Marconi Wireless Telegraph Company, the station was located at Tamarack Junior location, owned by the Osceola Mining Company. Second volume is a drill attendance book for the Navy Reserve fleet based in Hancock, Michigan.

Unprocessed material, undated, removed from the Calumet and Hecla Public Library building in Calumet, Michigan. Includes mixed records and oversize material, mostly relating to the Calumet and Hecla Mining Company.

Records, circa 1930-circa 1959, of the Valvoja Publishing Company, the publisher of "Valvoja," a Finnish, semi-weekly newspaper published in Calumet, Michigan. Includes advertising account ledgers and accounts payable and receivable ledgers.

Ledger, 1892-1897, from Vertin's Department Store in Calumet, Michigan. Bound volume includes individual charge accounts that indicate the good purchased, prices and dates accounts are paid.

Collection of drawings by Warren H. Manning for the design of Agassiz Park in Calumet, Michigan. Manning was commissioned to design Agassiz Park as a memorial to the late president of the Calumet and Hecla Mining Company, Alexander Agassiz. Includes presentation drawings, plans for the park layout and various structures, plans for the Agassiz statue, and various area maps and plans.

Records, 1898-2010, bulk 1924-1979, of the WHDF Radio Station operating in the Copper Country of Michigan's Upper Peninsula. Includes correspondence, reports, financial records, stock certificates, licenses, newspaper clippings, history of the station and other related ephemera. Also includes oversize maps and geological surveys of the surrounding area.