2019-10-302022-02-032019-10-302022-02-03https://hdl.handle.net/11124/173340Donor: Colorado Mining Association.View from a distance of the Butterfly mine surrounded by trees and mountains and clouds in the sky.6 x 4 1/4 inchesblack-and-white photographsCopyright retained by Colorado Mining Association.Mines and mineral resources -- Colorado -- San Miguel CountyButterfly Mine (Colo.)StillImage