William Wilder is the Director of Technical Sales for Graham Architectural Products Corporation in York, Pennsylvania. Bill has been involved in the window industry for over thirty-five years. In 1986, Bill joined Graham Architectural Products as a field service technician. Since then, Bill has held the positions of Field Service Manager, Project Manager, Manager of Technical Services and Eastern Division Sales Manager. Currently Bill serves as the Director of Technical Sales in which he focuses on assisting architects, owners, developers and historic consultants with large and technically challenging projects, including and specializing in the design and development of historic projects. Bill has worked on many high-profile historic projects, often working or communicating directly with local historic commissions and the National Park Service.