Informations importantes : Arrêt du Club R (13 août) et Cessation d'Activité (30 septembre)
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The Rural And Village Schools Of Colorado; An Eight Year Survey Of Each School District, 1906-1913, Inclusive
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The Official Manual Of The Cripple Creek District, Colorado, U. S. A.; Volume 1
Emmons, S: Downtown District Of The Leadville, Colorado (Cla
Colorado Geological Survey: Geology Of The Tarryall District
Geology Of The Aspen Mining District, Colorado, With Atlas
Geology And Ore Deposits Of The Creede District, Colorado
