Born-Digital or AnalogAnalogTranscriptTunnels Clear Creek tunnels being finished. RMN Feb. 28, 1952 p.1 Mountain States Construction Co. low bidder on Tunnel at Glen Canyon Dam. Post Sept. 13, 1956 Clips: Tunnels Attempt by Denver, Utah and Pacific Railroad to build tunnel through Continental Divide, Yankee Doodle lake. RMN Feb. 15, 1959 p.17A First Colorado tunnel lighting project underway on U.S. Highway 6, east of Idaho Springs. Post May 1, 1959, p.3CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
