Geology of the Aspen Mining District, Colorado - With Atlas is an unchanged, high-quality reprint...

Economic Geology of the Mercur Mining District, Utah is an unchanged, high-quality reprint of the...

''Geology of the Yukon Gold District, Alaska'' is a book written by Josiah Edward Spurr in 1898. ...

Through the Yukon Gold Diggings: A Narrative of Personal Travel, a classical book, has been consi...