Spurr Edward

Through The Yukon Gold Diggings

Geology Of The Tonopah Mining District Nevada

Geology Of The Aspen Mining District, Colorado, With Atlas

From The Coast To The Golden Klondike [Microform]: The Record Of An Official Journey

Political And Commercial Geology And The World's Mineral Resources

Political And Commercial Geology And The World's Mineral Resources

Through The Yukon Gold Diggings: A Narrative Of Personal Travel (Classic Reprint)

Geology Of The Yukon Gold District, Alaska