Mount Vernon’s library is the recipient of a major donation of 18th-century maps, images and other documents pertaining to the American Revolution that is valued at around $12 million. The Richard H. Brown Revolutionary War Map Collection, named for the private collector who donated them, features more than 1,000 items dating from between 1740 and 1799. Of those items, 292 have been digitized so far. Mount Vernon’s Fred W. Smith National Library for the Study of George Washington took possession of most of the donation last month. [WMS]