Texas offers a searchable unclaimed money database which holds over $2.2 billion in unclaimed funds and is updated daily. You can also call and ask for their department to search (up to 3 searches per call). Their site has an FAQ section, instructions for how to file a claim for unclaimed money, information for holders, links to other related sites and contact info. Be aware that Texas charges a 1.5% fee on claims over $100.
Texas Comptroller of Public Accounts
Unclaimed Property Division
Research and Correspondence Section
P.O. Box 12046
Austin, Texas 78711-2046
Phone: 1-800-654-FIND (3463)
(512) 463-3120 (direct in Austin)
Website: Texas State Page