By Gene Pisasale, Special to UnionvilleTimes.com CHADDS FORD — Standing tall on a wooden easel in the entryway of the Sanderson Museum is a framed map, its blue trim surrounding red, green and yellow highlights calling attention to the people, places and events which have made the 768 square miles of Chester County so special … Continue reading History Made Personal: Historical Wyeth-Sanderson Map of Chester County