Peavey, one year before demolition, July 1996 (LaFontaine Collection)

Bureau of Mines’ Minneapolis campus, seen in the 1970s. From NPS 2009.

A 1917 ad for Miscampbell Trucks (Duluth News Tribune).

A full load of sand on its way to the elevator.

The RL Hearn GS, seen in the 1960s by the looks of it.

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.

Port Arthur Row, 1977. Image Credit: Thunder Bay Archives.

Gen. W.T. Sherman, signatory of Hunter Treaty. Courtesy of the Library of Congress.

Carriage ad. (1905). Garden & home builder, 1-2. Retrieved from http://books.google.com/books?id=3OZIAAAAYAAJ

Mitchell Sugar Mill, 1920, Colorado State Library