Sterling-Sugar-Beers-Colo-1938-Library-of-Congress-Prints-Photographs-Division-FSA-OWI-Collection-LC-USF34-015807-E

In the last years of the Builder’s Supply Company, which occupied the Twohy from the 1960s to the 1980s. Photo taken in 1983 as part of the Superior Intensive Survey.

Note the two tunnels behind the steam plant in this 1930s image from MNHS.org.

Erskine, A.R. (1924). History of the studebaker corporation . South Bend, IN: Studebaker Corp.

Entry doors and escape hatch at a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-65]

A map of the mines overlaid with the plant (now demolished).

Mines on Gunnell Hill, 1900s.

Aerial, June 1997 (LaFontaine Collection)

Pit doors on a similar base. From Library of Congress, Prints and Photographs Division, Historic American Engineering Record [HAER MN-100-98]

1911 Ogilvies, Archives of Manatoba