Prospectus, geological survey and report of the Gregory Gold Mining Company, Gregory District, Colorado Territory.
Publisher: [s.n.]
Published: 1863
Place of publication: New York, N.Y
Subjects: Gregory Gold Mining Company.; Gold mines and mining -- Colorado.; Geological surveys -- Colorado.
Other titles: Prospectus and geological survey & report of the Gregory Gold Mining Company, Gregory District, Colorado Territory; Geological survey and report of the Gregory Gold Mining Company, Gregory District, Colorado Territory.