Charles H. Mason (1886–1949) was employed for thirty-five years by Pierre S. "P.S." du Pont (1870-1954), the industrialist, entrepreneur, philanthropist, and horticulturalist who developed Longwood Gardens in Kennett Square, Pennsylvania. Mason worked as chief chauffeur and garage manager for du Pont. He lived with his family in a residence called "The Anvil" on the property at Longwood Gardens. This small collection includes Charles H. Mason and Marguerite Mason's journals (dictated by them and handwritten by Ann Mason, Charles Mason's sister) describing their early years in Lewes, Delaware.