Recently, however, I came across a new piece of information that has led me to rethink some of my conclusions -- a map that is believed to have been made by Colonel Richard Winn, one of the American commanders at that battle.
The direct link to the map is here. It is one of several Winn maps hosted on John Robertson's Online Library of the Southern Campaign of the Revolutionary War website.
On the map, Hanging Rock is at center right. The map identifies the "Tory encampment under Col Brian," the "old field British encampment," and a "Steep Hill"
A map like this should make it easier to understand where and how the battle was fought, but unfortunately I find this map difficult to reconcile with some of the other statements in the source material and with the modern landscape. For example, the map makes it appear that the battle was not fought along Hanging Rock Creek (as has been supposed by myself and others) but along another creek that flowed south and west into the Catawba River. I'm willing to revise my conclusions (including a draft article I prepared), but it seems to me that other information is needed to help make sense of this map. Folks that are familiar with the area -- especially archaeological work that has been performed -- are encouraged to contact me about what they know, or to point me towards persons or sources that may be helpful. Emails can be addressed to me (Adam) at mini_awi "at" yahoo "dot" com.