The Portland, Colorado's richest gold mine
By: photography, Joe Vanderwalker ; text, Brian Levine.
Contributors: Vanderwalker, Joe.
Edition: 1st ed.
Publisher: Syzygy Gold Mining Co.
Published: 1989
Place of publication: Victor, Colo
Language: eng
Number of pages: 64
Subjects: Portland Gold Mining Company.; Gold mines and mining -- Colorado -- Cripple Creek Region -- History.; Cripple Creek Region (Colo.) -- History.
Notes: Includes bibliographical references (p. 64).