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  • 2006 NASA Strategic Plan. http://www.nasa.gov/pdf/142302main_2006_NASA_Strategic_Plan.pdf.
  • China’s Space Program: An Overview. http://www.fas.org/sgp/crs/space/RS21641.pdf
  • Mercury-13 the Women of the Mercury Era. http://www.mercury13.com/index.html
  • NASA. http://www.nasa.gov
  • NASA History Division. http://history.nasa.gov/
  • NASA human Spaceflight history http://spaceflight.nasa.gov/history/
  • NASA, “Sputnik the Fiftieth Anniversary.” http://history.nasa.gov/sputnik/
  • NASA, “The Decision to Go to the Moon: President John F. Kennedy's May 25, 1961 Speech before a Joint Session of Congress.” http://history.nasa.gov/moondec.html
  • NASA “Spinoff Homepage.” http://www.sti.nasa.gov/tto/
  • NASA Earth Observatory, “On the Shoulders of Giants: Wernher von Braun.” http://earthobservatory.nasa.gov/Library/Giants/vonBraun/vonbraun_4.html
  • NASA "Before This Decade Is Out...” Chapter 3 Wernher von Braun. http://history.nasa.gov/SP-4223/ch3.htm.
  • NASA SP-4209 The Partnership: A History of the Apollo-Soyuz Test Project, Appendix B -Development of Manned Space Flight, American and Soviet. http://www.hq.nasa.gov/office/pao/History/SP-4209/appb.htm
  • NASA SP-4209 The Partnership: A History of the Apollo-Soyuz Test Project. http://history.nasa.gov/SP-4209/toc.htm
  • RussianSpaceWeb.com. http://www.russianspaceweb.com/index.html
  • The Vision for Space Exploration. http://www.nasa.gov/mission_pages/exploration/main/index.html
  • US Centennial of Flight Commission, “Early Soviet Human Spaceflight Program.” http://www.centennialofflight.gov/essay/SPACEFLIGHT/soviet_
  • US Centennial of Flight Commission, “The Soviet Race to the Moon.” http://www.centennialofflight.gov/essay/SPACEFLIGHT/soviet_