22 Tex. Admin. Code § 337.1
Displayed reproduction of the original license and/or the biennial renewal certificate is unauthorized. The original license and renewal certificate must be displayed in the principal place of practice. The wallet-sized certificate of license renewal may be presented for identification. Reproduction of the original license and/or renewal certificate is authorized for institutional file purpose only.
Source Note:The provisions of this §337.1 adopted to be effective March 1, 1986, 11 TexReg 724; amended to be effective November 11, 1993, 18 TexReg 7551.