Born-Digital or AnalogAnalogTranscriptPetroleum. Colorado ,(,4 Brief history of petroleum industry in state. RMN April 19, 1959, p.22-23C (Centennial edition - sec. C) Bent county oil discovery booms southeast Colorado. RMN Dec. 22, 1959 p.75 Southern IItes in S.W. SOUTHWEST Colorado profit in oil & gas lessee to white man. Post March 30, 1960 p.21 Recent activity and output in Denver basin. Shell Echo v.7 #2 Feb., 1960 p.4 Colorado coil production increases. 47.5 million barrels in 1960. Post Feb 12, 1961 p.lCollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
