 The primary purpose of the program and trust is to return important and priceless Latin American cultural property back to Mexico and other Latin America countries of origin.The works range from (1) pre-Columbian pottery and stone works of Meso-American (Mexico and Central America) and other cultures, including the South American Inca and pre-Inca cultures of Peru, Ecuador, Chile, and Bolivia to (2) colonial cultural works produced during and after the Spanish Conquest (including codex and other early printed works) to (3) Independence, Porfiriato, and Revolutionary Eras from 1810 to 1920 to (4) modern cultural property produced from 1920 to 1968 (including art by Saturnino Herran, Frida Kahlo, Diego Rivera, David Alfaro Siqueiros, José Clemente Orozco, and Rufino Tamayo).J L Am Anthro History 1989 Apr 15; 39-42.