To visit the national Postal Museum Branch of the Smithsonian Institution Libraries, go to
http://www.si.edu/postal/library/library.html

All postage stamps courtesy of the National Postal Museum, Smithsonian Institution. Visit the National Postal Museum on the Web at
http://www.si.edu/organiza/museums/postal/start.htm.

"Raised Fields for Sustainable Agriculture in the Bolivian Amazon" and "New Technology in the Ecuadorian Rainforest" courtesy Center for Folklife Programs and Cultural Studies 1994 Festival of American Folklife, Smithsonian Institution. Visit the Center for Folklife Programs and Cultural Studies on the Web at
http://www.si.edu/folklife/