The Christian C. Sanderson Museum on Creek Road in Chadds Ford is now open for the 2014 season. CHADDS FORD — That gem of both Southeast Pennsylvania history and that of the better part of the 20th Century of American History — the Christian C. Sanderson Museum — is now open for the 2014 season, on Thursdays through Sunday from 12 pm to 4 pm. “We look forward to welcoming visitors to the...