Okla. Stat. tit. 74E § 2.56
Whenever a candidate committee makes an expenditure for the purpose of a communication through Internet advertising, or direct mail, magazine advertisement, newspaper advertisement or any other printed medium, the communication shall state in writing of sufficient size and contrast to be clearly readable by the recipient of the communication: "Authorized and paid for by NAME OF COMMITTEE". Provided that for campaign signs, banners and other campaign materials capable of re-use, the name of the committee for purposes of this Rule is the name of the committee as registered with the Ethics Commission but is not required to include the year of the election for which the committee is formed. This provision shall not apply to bumper stickers, campaign buttons, t-shirts, aerial advertising or similar advertisements of such a nature that inclusion of a disclaimer would be impractical.
Okla. Stat. tit. 74E, § 2.56