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.

Research materials and personal papers, 1956-2019, of William "Bill" J. Sproule.