43 U.S.C. § 44: Sale of transfers or copies of data

The Director of the United States Geological Survey shall, if the regular map work of the Survey is in no wise interfered with thereby, furnish to any person, concern, institution, State or foreign government, that shall pay in advance the whole cost thereof with 10 per centum added, transfers or copies of any cartographic or other engraved or lithographic data in the division of engraving and printing of the Survey, and the moneys received by the Director for such transfers or copies shall be deposited in the Treasury.