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Green, John C. C.: Two Harbors, Keweenawan and Ely area
Green, John C.: Duluth Complex Structure
Green, John C.: Ely area
Green, John C.: Ely Area
Green, John C.: Ely area
Green, John C.: Ely area
Green, John C.: Ely Quadrangle
Green, John C.: Gabbro Lake Quadrangle
Green, John C.: Keweenawan
Green, John C.: Keweenawan