2023-02-272023-02-271896https://hdl.handle.net/11124/16654Scale approximately 1:600. 50 feet = 1 inch.Photocopy on 2 sheets assembled.Map shows mining claims and underground workings in Sec. 9 and 12, T.7 S., R.77 W., Minnesota mining district or Breckenridge mining district.Section shows underground workings.Colors showing "monthly progress" do not appear on photocopy.Blackline.On sheet 23 x 77 cmmine mapsengNo Known Copyright: http://rightsstatements.org/vocab/NKC/1.0/.Mines and mineral resources -- Colorado -- Summit County -- MapsStillImage