Paper, envelopes, and blank books required by the stationery rooms of the Senate and House of Representatives for sale to Senators and Members for official use may be purchased from the Director of the Government Publishing Office at actual cost thereof and payment therefor shall be made before delivery.
Structure US Code
CHAPTER 41— CONGRESSIONAL OFFICERS AND ADMINISTRATION
§ 4101. Authority of officers of Congress over Congressional employees
§ 4102. Purchase of supplies for Senate and House
§ 4104. American goods to be preferred in purchases for Senate and House
§ 4105. Purchase of paper, envelopes, etc., for stationery rooms of Senate and House
§ 4106. Stationery rooms of House and Senate; specification of classes of articles purchasable
§ 4107. Withdrawal of unexpended balances of appropriations