1 Tex. Admin. Code § 26.1
(a) A disclosure statement that is required by §255.001, Election Code, must contain the words "political advertising" or any recognizable abbreviation, and must:
(b) A disclosure statement is not required on political advertising printed on letterhead stationery if the letterhead contains the full name of one of the following:
Source Note:The provisions of this §26.1 adopted to be effective December 31, 1993, 18 TexReg 9746; amended to be effective December 10, 2003, 28 TexReg 10906; amended to be effective January 1, 2017, 41 TexReg 10541.