Cultural property : memorandum of understanding between the United States of America and Peru, signed at Washington, June 9, 1997, with appendix; and Agreements amending and extending the Memorandum of Understanding, effected by exchange of notes at Lima, March 22, 2002; and effected by exchange of notes at Lima, May 23 and 28, 2007; and effected by exchange of notes at Lima, May 30 and June 6, 2012.