Tesoros del Arte Popular Mexicano - Folk Treasures of Mexico: The Nelson A. Rockefeller Collection - Artes de MéxicoFolk Treasures of Mexico: The Nelson A. Rockefeller Collection. One of the main advocates of the rebirth of Mexican folk art in the first half of the twentieth century was Nelson A. Rockefeller, whose passion for our country led him to create one of the most important collections of Mexican crafts in existence abroad. This book provides an overview of his exceptional collection. Written by: Marion Oettinger Jr., Annie ONeill. Intr.: Ann R. Roberts.