American AMOCO Gas

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American Oil Company, known as Amoco, ran its "Join the 'American' Party" ad campaign from the 1930s and 1940s. In 1936, newspapers announced that gas stations were giving out multi colored, engraved portraits of the Presidents of the United States as collectible stamps as well. A billboard from 1942 read "For Greater Values Join the American Party - American Gas Amoco." Amoco, was incorporated in 1922 and later became part of Standard Oil of Indiana, which had been broken off from the Standard Oil trust in 1911. In the 1920s, Amoco was among the first oil companies to sell lead-free gasoline as well as leaded gas. Amoco merged with British Petroleum (BP) in 1998.