NASA Ames Research Center (Photographer). (n.d.). Exterior view of a double cylinder colony [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Exterior view of several two-cylinder colonies [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Interior view including looking through large windows [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Interior view with long suspension bridge [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Interior featuring clouds and vegetation [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Exterior view of several neighboring colonies [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Part of the rim including many nearby space vehicles [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html
NASA Ames Research Center (Photographer). (n.d.). Interior including human powered airplane [Photograph], Retrieved October 15, 2016, from: http://settlement.arc.nasa.gov/70sArt/art.html