In October 1917, following the United States entry into World War I, a group of independent oil men, many of whom became legendary in the history of Oklahoma and the petroleum industry, met in Tulsa, Oklahoma to organize the Mid-Continent Oil & Gas Association.
In 1919 they formed the Oklahoma-Kansas Division. It is one of the oldest petroleum associations in the United States. A principal purpose of the Associationís formation was to provide essential supplies of petroleum and petroleum product to the allied forces, helping the Allies, "...to float to victory upon a wave of oil." Mid-Continentís contribution to that success helped establish it as an Association in which individuals working cooperatively could resolve mutual problems and achieve great results.
These men included Frank Phillips, one of the founders of Phillips Petroleum Co.; E. W. Marland, whose company became Conoco, Inc., and who later became Governor of Oklahoma; Alf M. Landon, later to be Governor of Kansas and Republican Presidential nominee in 1936. There was W. G. Skelly, founder of Skelly Oil Company and H. H. Champlin, founder of Champlin Oil Co.