Born-Digital or AnalogAnalogTranscriptRoads. Colorado. Boulder-Monarch lake toll road (proposed) proposed road meets opposition by colorado Open Space coordinating council. 1967 Boulder-Monarch Lake Turnpike proposal studied 1967CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Roads. Colorado. Boulder-Monarch lake toll, [525534]. Denver Public Library Digital Collections, accessed 16/12/2025, https://digital.denverlibrary.org/nodes/view/1631335
