General Links

First, Mailing lists:
The RootsWeb Mail Lists were discontinued by Ancestry. You can find new lists at Io Groups and at Google Groups.
Look for lists for your surnames and the counties where your folks resided.

GenForum:
https://genforum.genealogy.com/
GenForum is now read-only.

Message Boards
https://www.ancestry.com/boards/
Type up a nice query to post on these sites. Try to be as specific as you can. Something like: "I am looking for information on Mary Jones, born (birthdate) (place); died (date) in (place); married John Smith (date) (place).

Some Texas Specific Links
Civil War Pensions
https://www.tsl.texas.gov/apps/arc/pensions/

Texas GenWeb:
http://www.txgenweb.org/
Follow the links to the counties you are researching.

Church of Latter Day Saints
https://www.familysearch.org/
Lots of great databases including census records.

County Clerk addresses and phone numbers can be found at:
https://vitalrec.com/
Follow the links to the state and county you need.