606
28 Stat. 608.
PUBLIC LAW 86-682-SEPT. 2, 1960
[74 S T A T.
§ 2502. Double postal cards, letter-sheet envelopes, doubleletter envelopes (a) The Postmaster General may furnish for public use, with postage stamps printed or impressed thereon, double postal cards, letter-sheet envelopes, and double-letter envelopes. (b) The Postmaster General may not make payments for royalty or patent right on any of the articles named in this section. § 2503. P o s t a l c a r d s and stamped envelopes (a) The Postmaster General shall furnish for public use postal cards and envelopes with postage stamps printed or impressed thereon. (b) Stamped envelopes shall be sold as nearly as possible at cost, but not less than cost. Cost includes the value of the postage stamps, salaries and clerk hire, and other expenses connected therewith. § 2504. Improvements in s t a m p s and envelopes The Postmaster General may adopt such improvements in postage stamps and stamped envelopes as he deems advisable. When an improvement is adopted it shall be subject to all the provisions of law respecting postage stamps or stamped envelopes. § 2505. Sale of postage due s t a m p s (a) Postage due stamps may not be sold by any postmaster nor received by him in prepayment of postage or fees for special services. (b) The Postmaster General may designate agencies of the Department where postage due stamps may be sold for philatelic purposes only. § 2506. P r i n t i n g of black-and-white illustrations of United States stamps (a) When requested by the Postmaster General, the Public Printer shall print as a public document for sale by the Superintendent of Documents, illustrations in black and white of postage stamps of the United States, together with such descriptive, historical, and philatelic information with regard to the stamps as the Postmaster General deems suitable. (b) Notwithstanding the provisions of section 58 of title 44, stereotype or electrotype plates, or duplicates thereof, used in the publications authorized to be printed by this section may not be sold or otherwise disposed of. § 2507. S t a m p s to be defaced (a) The Postmaster General shall direct the manner in which postage stamps on mail matter shall be canceled and may furnish necessary equipment and supplies therefor. (b) The Postmaster General may furnish to post offices postage stamps precanceled with the name of the post office at which they are to be used imprinted thereon. (c) The Postmaster General may issue permits to persons using stamped envelope and postal cards to precancel the postage stamps thereon. § 2508. Permits for special canceling or p o s t m a r k i n g dies (a) In post offices of the first and second class the Postmaster General may permit, for a period of six months and the duration of the event to be advertised, the use of special canceling stamps or postmarking dies for advertising purposes when the event to be advertised-j(1) is for a national purpose for which Congress has made an appropriation; or
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