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Stauffer, C.R.: Stratigraphy, Book 29 (Box 18, Folder 04)
Stauffer, C.R.: Stratigraphy, Book 28 (Box 18, Folder 04)
Schwartz, George M.: Duluth Area, Book  1 (Box 17, Folder 03)
Gruner, John W.: Knife Lake Slate Problem (Box 16, Folder 08)
Grout, Frank F.: ""T 63 N, R 2 W"" (Box 19, Folder 02)
Grout, Frank F.: Cook County (Box 19, Folder 03)
Grout, Frank F.: Cook County - Above highway 61 (Box 20, Folder 04)
Grout, Frank F.: Brule Lake, 1 (320) (Box 19, Folder 01)