The Continental Oil and Transportation Company was founded by Isaac Elder Blake in 1875. Based in Ogden, Utah, the company distributed oil, kerosene, benzene, and other products in the western United States. Continental Oil Company was acquired by Standard Oil Company in 1884 and was spun off from Standard Oil during the Standard Oil divestiture in 1911. The main office was later moved to Ponca City, Oklahoma, when in 1929, Marland Oil Company (founded by exploration pioneer E. W. Marland) acquired the Continental Oil Company. Marland Oil acquired the assets (subject to liabilities) of Continental Oil Company for a consideration of 2,317,266 shares of stock. At that time, Marland Oil changed its name to Continental Oil Company. The acquisition gave Conoco the red triangle symbol previously used by Marland which would become Conoco's logo from 1930 to 1970, when the now-familiar capsule logo was adopted.