Wilson's Farm has a historic marker on Hwy 175. See this link http://www.waymarking.com/waymarks/WMJVXZ_Federal_Advance_Wilsons_Farm_Mansfield_LA . I don't think Carroll's Mill is marked but it is my understanding that it was on Ten Mile Bayou where it crossed the road. There is a sign marking Ten Mile but you have to watch carefully, it's pretty small and the bayou is now not much more than a small creek.