Born-Digital or AnalogAnalogTranscriptAutomobiles. Colorado "1910 Croxton-Keeton make automobile. First car into Silverton, Colorado." Silverton Standard Sept. 11, 1953 p.1 c.5 50% increase seen by 1975. Cervi's Journal N 25, 1954 p.1 Experts analyze upcoming inspection of automobile exhaust in air pollution fight. Post Je 3, 1965 p.$4CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
