§ 6814. Records of shipment. For the purpose of enforcing provisions
of this article, carriers engaged in commerce, and persons receiving
drugs, devices or cosmetics in commerce or holding such articles so
received, shall, upon the request of an officer duly assigned by the
secretary, permit such officer, at reasonable times, to have access to
and to copy all records showing the movement in commerce of any drug,
device or cosmetic, or the holding thereof during or after such
movement, and the quantity, shipper, and consignee thereof: and it shall
be unlawful for any such carrier or person to fail to permit such access
to and copying of any such record so requested when such request is
accompanied by a statement in writing specifying the nature or kind of
drug, device or cosmetic to which such request relates: Provided, that
evidence obtained under this section shall not be used in a criminal
prosecution of the person from whom obtained: Provided further, that
carriers shall not be subject to the other provisions of this article by
reason of their receipt, carriage, holding or delivery of drugs, devices
or cosmetics in the usual course of business as carriers.