Born-Digital or AnalogAnalogTranscriptLadd petroleum corporation To merge with LVO Corporation of Tulsa. RMN Je 18, 1974 p.45 Feature on Denver oilman J. Bertram Ladd & his co. Post Ap 17, 1977 p.3E,8E J. Bert Ladd leaves company, John H. Moore named president. Post Ja 21, 1979 p.3ECollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
