Mac K Griswold

In 1984, the landscape historian Mac Griswold was rowing along a Long Island creek when she came upon a stately yellow house and a garden guarded by looming boxwoods. She instantly knew that boxwoods that large--twelve feet tall, fifteen feet wide--had to be hundreds of years old. So, as it happened, was the house: Sylvester Manor had been held in the same family for eleven generations. Formerly encompassing all of Shelter Island, a pearl of 8,000...