Born-Digital or AnalogAnalogTranscriptLudlow, Colorado John D. Rockefeller, Jr. disguised self as a coal miner to get information. Pony Express v.23 #9 Feb. 1957 p.6 Colorado and Southern petitions Public Utilities Commis- sion to discontinue RR agency at Ludlow, Colorado. railroad Post May 9, 1958 p.L,2 c.2CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
