[Photograph 2012.201.B0230.0150] [Photograph 2012.201.B0230.0150] Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Neal P. Cochran, chief of the Office of Coal Research Utilization of the U.S. Department of Interior, will be guest speaker at the April meeting of the Oklahoma City section of the Society of Petroleum Engineers." mark.phillips@unt.edu https://gateway.okhistory.org/ok/media/aubrey_public/images/brand-ok/favicon.ico open