Book excerpt: Andrew Wyeth is renowned for his paintings of the Chadds Ford countryside, but what about the his brother, the inventor of the plastic soda bottle? Then there is Bill Haley of Booth's Corner who, along with the help of a few Delaware Valley teenagers, came up with a new sound called rock-and-roll. With a fascinating and occasionally uproarious collection of his Main Line Today magazine columns, author Mark E. Dixon explores the forgotten corners of Delaware County's history. From the Upper Darby abolitionist who conducted more than two thousand people on the Underground Railroad to the Sun Shipyard press stunt that landed heavyweight boxing champion Jack Dempsey in hot water, these offbeat histories will delight visitors and locals alike.