Born-Digital or AnalogAnalogTranscriptRoads. Colorado. Denver-Boulder turnpike; Progress and description. Engineers' Bulletin Nov. 1950 p.6 Boulder Turnpike section. Past Jan. 13, 1952 sec.AAA 10 pages Description of road and of Boulder, Colorado. Colorado Wonderland v.3 J2 Feb. 1952 p.29, 33 Turnpike flops first big test. Post Sept. 21, 1952 p.6AA Turnpike income passes most optimistic hopes. Post1April 22, 1952CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
