Mobil Oil Outdoor Billboard Advertising circa 1926 by General Outdoor Advertising Co By Melanie | October 6, 2013 Mobil Oil Outdoor Billboard Advertising circa 1926 by General Outdoor Advertising Co Posted in CC License, Marketing and tagged 1926, General Outdoor Advertising Co, Mobil Oil ← The Botanical Humor of Mr. Lear circa 1872Vegetable Lamb of Tartary Antique French Print circa 1728 →