Dumbarton Oaks Research Library and Collection

Dumbarton Oaks Research Library and Collection, in Washington, D.C., institution in a Georgian-style mansion built in 1801 and housing Byzantine art (4th–15th century), pre-Columbian art (in an addition of eight circular glass galleries designed by Philip Johnson), and three libraries: a 100,000-volume Byzantine collection, an 18,000-volume pre-Columbian collection, and a 13,000-volume gardening and landscape architecture collection. The mansion (originally the home of William Hammond Dorsey), art collections, and book collections were all owned by Mr....