1. Pouring Molten Copper in Ingot Molds, Calumet, Mich. Collection: Keystone View Company Lantern Slides, 1892-1912 Institution: College of Charleston Libraries
2. Loading and Handling Cars with Copper Ore, Calumet, Mich. Collection: Keystone View Company Lantern Slides, 1892-1912 Institution: College of Charleston Libraries