Born-Digital or AnalogAnalogTranscriptColorado. Big Thompson project Big Thompson tunnel contract is awarded to Englewood firm. Post Ap 25, 1940 p.40 Bids are opened for highways to entrance of new tunnel. Post Mr 17, 1939 p.40 9CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Colorado. Big Thompson project, [185417]. Denver Public Library Digital Collections, accessed 16/09/2026, https://digital.denverlibrary.org/nodes/view/1529575
