So in original. Probably should be capitalized.
may not consider a proposal that is not accompanied by a bond with security or certified check in the amount of $5,000, guaranteeing that the bidder if his proposal is accepted, will enter into a formal contract with the United States to furnish the paper or envelopes specified. The Committee may not consider a proposal from a person unknown to it unless accompanied by satisfactory evidence that he is a manufacturer of or dealer in the description of paper or envelopes proposed to be furnished.
Historical and Revision Notes

Based on 44 U.S. Code, 1964 ed., § 7 (Jan. 12, 1895, ch. 23, § 5, 28 Stat. 602; June 16, 1938, ch. 477, § 3, 52 Stat. 761).