“Mapping Colonial America” is (1) an online exhibit on the Colonial Williamsburg site, available in low-bandwidth and high-bandwidth Flash versions; (2) a real-life exhibit at the DeWitt Wallace Museum of Decorative Art in Williamsburg, Virginia, running until October 9; (3) based on Prichard and Talliaferro’s book, Degrees of Latitude: Mapping Colonial America. (Thanks to Edie for the link.)