A postcard of Birtle in the 1930s. From Manitoba Historical Society.
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Source: JT Reeder / Michigan Tech Archives
![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]](https://i2.wp.com/substreet.org/wp-content/uploads/2017/08/MS40-escape-hatch-and-entry-doors-to-pit-a-Library-of-Congress-Prints-and-Photographs-Division-Historic-American-Engineering-Record-HAER-MN-100-65.jpg?w=322&h=322&crop=1&ssl=1 "Decommissioned Nike Base (HAER-Library of Congress)")
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 detail from a 1862 plat map of the area, showing several never-built communities and present-day ghost towns. From Denver Public Library.
Note the two tunnels behind the steam plant in this 1930s image from MNHS.org.
Globe from the side of Great Northern. Sawyer Unloader (Gallagher, Duluth Public Library)
Two of the major structures around the harbor. On a side, note, the left span of the bridge in the top motif is now a fishing pier on Rice’s Point, Duluth.
Occidental (left) and Peavey (right), June 25th, 1997 (LaFontaine Collection)
A pamphlet from 1967 showing the ghostic front of the church.