The 1860s were years of extensive growth and development in the Venango County oil fields of Pennsylvania. As the "Upper Field" began to play out and production slowed, up stepped the newly discovered Clarion, Armstrong and Butler County oil region. The 1870s introduced to the world the exciting "Lower Belt," and the "Boom" was on. In this final edition, author Gary S. McKinney interestingly delivers the reader into the exciting, wild and fascinating history of the northwestern Pennsylvania oil boom of the late 1800s--the early days of oil discovery in America. Revealed are the many stories and faces behind the boomtowns that sprang to life along the belt. Extensively supplemented with B&W photos and illustrations; 30 lithographs, 91 photos and 15 maps have been added to this edition.