The Online Books Page

Online Books by

David S. F. Portree

• Portree, David S. F.: Humans to Mars: Fifty Years of Mission Planning, 1950-2000 (Washington: National Aeronautics and Space Administration, 2001)
  • PDF at NASA
  • page images at HathiTrust

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Additional books from the extended shelves:

• Portree, David S. F.: Walking to Olympus : an EVA chronology (NASA History Office, Office of Policy and Plans, NASA Headquarters, 1997), also by Robert C. Treviño and United States. National Aeronautics and Space Administration. History Office (page images at HathiTrust)
• Portree, David S. F.: Walking to Olympus : an EVA chronology, 1997-2011 (Washington, DC : National Aeronautics and Space Administration, NASA History Program Office, Public Outreach Division, Office of Communications NASA Headquarters, 2016, 2016), also by Julie B. Ta and Robert C. Treviño (page images at HathiTrust)

See also what's at your library, or elsewhere.

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Edited by John Mark Ockerbloom (onlinebooks@pobox.upenn.edu)
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