His divorce records (probably) and definitely his probate records (including his will) would be in court records in the county where he lived.
Dear Ms. Green,
Thank you for posting your request on History Hub!
To augment the information from the previous poster, we suggest that you search the Texas Probate Records, 1800-1990 and contact the Texas County Clerk in the county where the divorce and probate records were filed. Also, please review the FamilySearch Research wiki for Texas, United States Genealogy.
We hope this is helpful. Best of luck with your research!