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Sundeen, Stanley W.: Idaho Springs, Colorado (Box 24, Folder 09)
Gruner, J.W.: Vermilion Detail/Knife Lake Problem, 3 (Box 14, Folder 10)
Gruner, J.W.: Vermilion Detail/Knife Lake Problem, 2 (Box 14, Folder 10)
Gruner, John W.: Knife Lake Slate Problem, 3 (Box 12, Folder 04)
Gruner, John W.: Knife Lake Slate Problem, 14 (Box 12, Folder 09)
Gruner, John W.: Knife Lake Slate Problem, 13 (Box 12, Folder 09)
Gruner, John W.: Knife Lake Slate Problem, 12 (Box 12, Folder 08)
Gruner, John W.: Knife Lake Slate Problem, 11 (Box 12, Folder 08)
Gruner, John W.: Knife Lake Slate Problem, 10 (Box 12, Folder 07)
Gibson, George R.: Knife Lake Slate, 8 (Box 14, Folder 05)