I work about 5 minutes from Colonial Williamsburg. Here are a few phone numbers you might try:
Colonial Williamsburg-757-229-1000
Yorktown Battlefield - 757-898-2410
Got them out of the phone book. If I can scrounge up some other info I'll pass it on to ya.
Also, check out
www.vcdl.org. I'm sure you can find the answer to your question there.