This document amends the Customs Regulations to reflect the imposition of import restrictions on certain archaeological material ranging in date from approximately 8000 B.C. through approximately 1500 A.D. and representing prehispanic cultures of the Republic of Nicaragua. These restrictions are being imposed pursuant to an agreement between the United States and Nicaragua that has been entered into under the authority of the Convention on Cultural Property Implementation Act in accordance with the United Nations Educational, Scientific and Cultural Organization (UNESCO) Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property. The document amends the Customs Regulations by adding Nicaragua to the list of countries for which an agreement has been entered into for imposing import restrictions. The document also contains the Designated List of Archaeological Material that describes the types of articles to which the restrictions apply.