I inherited some minerals in Howard County TX. The oil company started drilling in 2017 and we now have 4 producing wells. Our final division orders came out and they have cut our decimal interest by almost 42%. The landman is saying my granddad sold 40 acres of the 160 acres. Also, the original owner retained 1/32 royalty. By my calculations, that is a little over 28% and not 42%. My Granddad acquired the property back in 1924 and I am trying to do some research to see how the ownership developed/changed over the years.
Can someone direct me to the best site to research and download documents dating back at least that far if not further. There are a lot of sites that want your information or money in order to access the documents. I am looking for a site that will allow you to download the documents for free if possible, or at least at a reasonable price.
Any help will be greatly appreciated.