A Short History of the Codorus Valley: 1700s and 1800s
Course | Registration opens 12/7/2026 8:00 AM EDT
Join us to learn about the Codorus Valley during the 1700s and 1800s, the area between the 3 main branches of the Codorus Creek in southwestern York County. This is an area that has become a center hub for development in York County and at the same time retains parts of the past. The Codorus Valley was first settled by Germans from the Palatinate region as west of the Susquehanna opened to settlement in the 1730s. The area had some of the earliest roads, the first railroads, and some of York County’s earliest churches.
Thomas Yingling
Thomas Yingling worked in the area of machine shop his entire career, from starting as a tool and die maker to starting his own machining business. His business, TRY TEK Machine Works, Inc., designed and built equipment for sewer and water pipe rehabilitation using trenchless technology and used around the world. In retirement he has served as president of the Codorus Valley Area Historical Society located in Jefferson, York County.