722. EXEMPT SALES TO STATES, MUNICIPALTIES, CHARITIES AND INDIAN TRIBES.

There are hereby specifically exempted from the provisions of this Chapter and from the computation of the amount of tax imposed by it, the gross receipts from sales of tangible personal property and the sale, furnishings or service of electrical energy, natural and artificial gas and communication service to the United States, to the state of South Dakota or to any other state of the United States or the District of Columbia, to public or municipal corporations of the state of South Dakota or of any other state of the United States or the District of Columbia, to any nonprofit charitable organization which devotes its resources exclusively to the relief of the poor, distressed or underprivileged, and has been recognized as an exempt organization under Section 501 (c) (3) of the Internal Revenue Code, or to any Indian Tribe.