jane the biggest event I have been at was Gettysburg, and as I recall we had 12,000 reenactors there.

The smallest I have been to which was considered a reenactment was about 50 reenactors.

There is a very good book about Living History by Jay Anderson, but is hard to find. You can get it at the Tulsa Library system and it details the history of Living History, which includes several different types of Time travel. The name of the book is "Time Machines"

curtis