Peck, Frank G.Burns, Thomas F.Hamma, M. M.2018-04-162022-02-032018-04-162022-02-03https://hdl.handle.net/11124/172202Mine report no. 815.President's report / Frank G. Peck -- Report of secretary and treasurer / Thomas F. Burns -- Report of accountant / M.M. Hamma.reportsengIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Portland Gold Mining CompanyMining claims -- Colorado -- Teller CountyGold mines and mining -- Colorado -- Teller CountySilver mines and mining -- Colorado -- Teller CountyCripple Creek Mining District (Colo.)Text