2020-10-072022-02-032020-10-072022-02-03https://hdl.handle.net/11124/175238Donor: Friends of Mineralogy, Colorado Chapter.Eagle River Canyon, showing the river, railroad and train cars, mine buildings, and the buildings of Gilman above on the ridge.12 x 4 inchesblack-and-white photographsUnderground mining -- ColoradoRailroads -- TrainsZinc mines and mining -- ColoradoMine buildings -- ColoradoStillImage