Frontenac Mine Map, 1912. From company records posted on gilpintram.com. The Frontenac workings, as mapped in 1912 for a company report, sent to London. Special thanks to Mark Baldwin, who posted these on his website. Similar Images ...based on the tags: historical-image... Grain Growers Grain Company Hospitality Tent An etching from a 1921 Miscampbell advertisement in the Duluth News Tribune. Note the ship in the Hughitt Slip! A close-up of the main building, now in ruins. Source: Michigan Tech Archives (MS058-102-08-001) Erskine, A.R. (1924). History of the studebaker corporation . South Bend, IN: Studebaker Corp. Studebaker ad. (1902). Country life in America, 2, Retrieved from http://books.google.com/books?id=IKZMAAAAYAAJ Lake Superior I, September 1998 (LaFontaine Collection) Distillery, 1935 (Kentucky Historical Society) Tour Brochure: Glass Ops Crew of one of the Canadian Northern Elevators, circa 1900.