Born-Digital or AnalogAnalogTranscriptTunnels. Colorado St. Louis Leadville 1951 1952 1953 water tunnel reported third finished. Post Mr 26 '51 p.12 tunneling perilous work. News My 21 151 p 19 . West slope counties demand all weather tunnel. Post Ag 5 152 p.1 Toll tunnel plan gets first approval. Post F 17 '53 big step taken toward tunnel linking slopes. Post aept.25 153 p.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng