Here's a link to the Library of Virginia's West Virginia section. Unfortunately, the tax information is on microfilm (hopefully someday they'll scan it and make it digital).
The good news is that land grant information is digital and available for download (click on the Land Office Patents and Grants Database)
There's plenty on the Lillys, Packs, Coopers. I couldn't find much under Moye, Ballard, or Pettry.