Records, 1948-1960, of the Lake Superior Radio Club, a group of amateur radio enthusiasts in Michigan's Upper Peninsula. Includes minutes of the club's meetings, copy of the by-laws and amendments, mailing list and correspondence as well as an amateur radio license.

Papers, 1953-2008, compiled and written by Larry Chabot, document the history of the White Pine Copper Company located in Ontonagon County and operated by the Copper Range Company. Includes newspapers, clippings, photocopies, newsletters, reports and correspondence related to the history of the White Pine Copper Company from the time the mine opened in 1953 to its closure in 1995.

Collection, circa 1863-circa 1883, of mining company records compiled by Lawrence J. Remington of Houghton, Michigan. Includes stock certificates, insurance policies, indenture letters, bills and receipts, correspondence, inventories and other printed ephemera from the South Pewabic Copper Company, Sheldon Mining Company of Lake Superior, Columbian Mining Company, Quincy Mining Company and Douglass Houghton Mining Company.

Collection, 1880-1968; 2007-2019, of the Lawton family of Michigan. Includes field notebooks of Charles DeWitt Lawton, written during his tenure as the State of Michigan Commissioner of Mineral Statistics, as well as correspondence of Charles Latham Lawton and Swaby Lawton. Also contains biographical information on family members including Charles Latham Lawton, Swaby Lawton, Nathan Oliver Lawton, Charles E. Wright and Ross Dunbar Blackburn.

Collection, undated, of blank letterhead and stationary from mining companies, civic entities and other organizations from Michigan's Upper Peninsula.

Papers, 1928-1991, of Lloyal Bacon, a professor of geophysics at the Michigan College of Mining and Technology (now Michigan Technological University) in Houghton, Michigan.

Collection, 1911-1978, compiled by Louis Koepel, a resident and historian of Michigan's Copper Country. Includes Securities and Exchange Commission filings for the merger of the Copper Range Company with Louisiana Land and Exploration Company, SEC paperwork for the Calumet and Hecla, Inc. sale to Universal Oil Products, auction catalogs for disposition of the W. Parsons Todd Collection, parts catalogs, patents. Also includes blueprints for the J. P. Cooper house in East Hancock, Michigan.

Paper, 1980, written by Susanne Monasa as an undergraduate student at Michigan Technological University in Houghton, Michigan. "Lumberjack Life" includes an oral history interview with H. Kenneth Hamar.

Research papers, 1915-1922, compiled in 1993 by Lawrence T. Fadner documenting the Navy Radio Station NUG in Calumet, Michigan, formerly owned and operated by the Marconi Wireless Telegraph Company of America with the call sign WCM. The radio station was taken over by the U. S. Navy in April, 1917 and was located on the Tamarack Junior location, owned by the Osceola Mining Company.

Letter books, 1862-1905, from various law offices in the Houghton County, Michigan area. Also includes several freight books from the steamer IVANHOE as well as ledgers from the merchant firm, J. Hoar & Brother.