Map Accuracy?

There are a number of maps of Arkansas from the 1850s and 1860s. I have wanted to make the roads represented in the campaign map of THE OZARKS CAMPAIGN as accurate as possible from period maps. As I got through the various maps though and look at the county borders and the road network, I have come to the conclusion that they were not 100% accurate. Even the town placement s sometimes off significantly on some maps. I have heard that sometimes map makers added fake places or changed a few things to detect plagiarism. Maybe that is the case on a few of them. Regardless, I think the final road network in THE OZARKS CAMPAIGN will be representative and a composite of several period maps.