The Parentage of Christopher Williams BROOKS

There are Revolutionary Land records that give 1,000 acres to Christopher Williams Brooks, "heir of Sgt. George Brooks"; This has led researchers to believe that Christopher Williams Brooks was the son of this George Brooks. However, I am trying to prove that this is not the case, that Christopher Williams Brooks is the son of Christopher Brooks and Susannah Williams (dau of Colonel Henry Williams). It is possible that C. W. Brooks was a nephew, and George and Christopher Brooks Sr were brothers. My goal is to find the original land grants to see 1) if it really says "George" and 2) if it indicates a better relationship between George and Christopher Williams Brooks.The TN archives charges $20 to photocopy and mail the land grants. I pinged the TN mailing lists and got some responses - one poster said that the records are microfilmed and are very hard to read. I would hate to pay $20 for something that I could not even read.