This site has a variety of information about restoration projects in Texas including a listing of grant programs. It also has a huge selection of preservation-related links.

HABS/HAER
http://www.cr.nps.gov/habshaer

The Historic American Buildings Survey/Historic American Engineering Record is an effort to preserve historic buildings through measured drawings and photographs. Much of this information is available online -- look under "The Collections."

Federal Historic Preservation Tax Incentives
http://www2.cr.nps.gov/tps/tax/index.htm

Much like the title says, this web site provides a wealth of information about federal tax incentives for historic preservation projects. There is information about rehabilitation standards as well as links to check on the status of projects in the program.