Larson, Henrietta M. History of Humble Oil & Refining Company; a study in industrial growth, by Henrietta M. Larson and Kenneth Wiggins Porter. - [1st ed.] - New York, Harper [c1959] - 769 p. illus. 25 cm. LCCN: 58008875 Subjects--Corporate Names: Humble Oil and Refining Company LC Class. No.: HD9569.H8 / L3 Dewey Class. No.: 338.476655