In 1989, Charles William (Bill) Moss was a resident artist/designer at Taliesin West (Frank Lloyd Wrights winter home near Scottsdale, AZ).  He helped a talented apprentice Mick Granlund to design and build an installation of shade sails over the William Wesley Peters Library Courtyard.  After roughly 20 years of weathering, the materials used on the sails were brittle and in need of repair.

Simón De Agüero, with his interest in fabric as an architectural material, completed the restoration of these sails.  Working in conjunction with Tenshon, a local shade sail fabricator, Simón kept the general concept, and only updated the materials to ensure that the design would last at least another 20 years.  Simón wrote an article on this project for Fabric Architecture Magazine