Sales of tangible personal property or services made on or after January 1, 2003, to an organization, which is exempt from taxation pursuant to the provisions of the 26 U.S.C. § 501(c)(3), and that is expending monies received from a private foundation grant in conjunction with expenditures of local sales tax revenue to construct a local public library, are exempt from sales tax. [68 O.S. § 1356(48) ]
Okla. Admin. Code § 710:65-13-333