Calhoun of his mother-in-law's $10,000 purchase of Dumbarton Oaks in 1822. At that time, twenty-one years after the estate had been built, it was called Oakly and was surrounded by thirty acres of ...

Dumbarton Oaks’ surging popularity is an example of ... your first views might make you think this is a public park rather than a botanic garden. Green lawns roll down a valley toward a pair ...