Although I don't recall using it, I have saved the URL of an online source of historical maps at . Animap, which I purchased at a bookstore and have used on several occasions, has animated maps of some states, including Virginia, showing the sequence in which counties were formed. I think that I just saw an on-line map site mentioned in the most recent issue of RootsWeb Review (). If I think of anything else, I'll let you know.
As for Littletown Plantation, it is about 2.5 mi. SE of Williamsburg overlooking the James River. When the Pettus family sold in 1700, Littletown and adjoining Utopia plantation contained about 1280 acres of land bordering the river. The manor house burned in the late 17th C., but archaeologists discovered the foundations of the manor house and numerous outbuildings in the early 1970s. I visited the site before and after the discovery. When the excavations were complete, they were filled in and timbers were laid to delineate the foundations of the buildings. Oyster shells were put down where the buildings had been located. Several signs were erected to interpret the site, initially called "Pettus Park" (later "The Pettus Site"). The archaeological work was described in a book by Dr. William M. Kelso entitled Kingsmill Plantations (Academic Press, 1984).
To reach Littletown, drive SE from Williamsburg on Route 60Z and turn right at the entrance to the Kingsmill residential community. You will have to get permission to go further at the guard house (explain what you want to see and why). Drive south for about 3/4 mile to the point where the road makes a sharp turn to the right (you can see the tree line ahead above the river). Take the left fork and then the right fork towards the new corporate retreat for the Anheuser-Busch Co. I haven't been there since the retreat was completed, but I believe that the "Pettus Site" is between the retreat and the river. I hope that the presence of the retreat has not restricted public access to the Pettus Site (though security may now be a greater concern, after 911).