Discover Oil! – The World’s First Billion Dollar Oil Field. Penn Brad Oil Museum – Bradford, PA Hear the “Wild Catting Tales” at the site of our 72 foot tall, 1890 Era Standard Rig. You can experience the excitement of the FIRST billion-dollar oil field. Guided tours by oil country veterans. See yellow dogs and barkers, headache posts, hurry-up sticks and sucker rods, all used to produce that miracle molecule of oil found in PA. Learn the story of “Music Mountain”. In 1881, the Bradford Oil Field produced an incredible 83% of the United States total oil output; over 90,000 wells were drilled here. Located in northwestern Pennsylvania in McKean County, the oil comes from the upper Devonian Bradford Sands. “High Grade Oil Metropolis of the World”