L'Enfant Sky
 Detail of  L'Enfant Sky
Promenade in Blues, Reds and Greens
 Detail of  Promenade in Blues, Reds and Greens
Austin with Parks
Detail of Austin with Parks
Circles
 Detail of  Circles
Washington, D.C. and Baltimore
 Detail of map of Baltimore
Colorado River
 Detail of  Colorado River
Hammerhead
  Hammerhead  detail
Forest
Nitrogen
Air
Plowed
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